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The following commit(s) were added to refs/heads/master by this push:
     new e3a01db5e Unit tests
e3a01db5e is described below

commit e3a01db5e5c6decc021700526fde6b8a60bff9a3
Author: James Bognar <[email protected]>
AuthorDate: Wed Oct 8 09:38:39 2025 -0400

    Unit tests
---
 ai-contexts/UNIT_TESTING.md                        |  93 ++++++++-
 .../org/apache/juneau/bean/openapi3/Callback.java  |   6 +-
 .../org/apache/juneau/bean/openapi3/OpenApi.java   |  48 +++++
 .../juneau/bean/openapi3/OpenApiElement.java       |   4 +-
 .../org/apache/juneau/bean/openapi3/Operation.java |  32 +++
 .../org/apache/juneau/bean/swagger/Operation.java  |  76 ++++++-
 .../org/apache/juneau/bean/swagger/SchemaInfo.java |   6 +-
 .../org/apache/juneau/bean/swagger/Swagger.java    | 124 +++++++++---
 .../apache/juneau/bean/swagger/SwaggerElement.java |   4 +-
 juneau-check-topic-links.py                        |  12 ++
 juneau-check-topic-links.sh                        |  12 ++
 .../apache/juneau/bean/openapi3/Callback_Test.java |   6 +
 .../juneau/bean/openapi3/Components_Test.java      |   6 +
 .../apache/juneau/bean/openapi3/Contact_Test.java  |   6 +
 .../juneau/bean/openapi3/Discriminator_Test.java   |   6 +
 .../apache/juneau/bean/openapi3/Encoding_Test.java |   6 +
 .../apache/juneau/bean/openapi3/Example_Test.java  |   6 +
 .../bean/openapi3/ExternalDocumentation_Test.java  |   6 +
 .../juneau/bean/openapi3/HeaderInfo_Test.java      |   6 +
 .../org/apache/juneau/bean/openapi3/Info_Test.java |   6 +
 .../apache/juneau/bean/openapi3/Items_Test.java    |   6 +
 .../apache/juneau/bean/openapi3/License_Test.java  |   6 +
 .../org/apache/juneau/bean/openapi3/Link_Test.java |   6 +
 .../juneau/bean/openapi3/MediaType_Test.java       |   6 +
 .../juneau/bean/openapi3/OAuthFlow_Test.java       |   6 +
 .../juneau/bean/openapi3/OAuthFlows_Test.java      |   6 +
 .../juneau/bean/openapi3/OpenApiBuilder_Test.java  |   2 +-
 .../juneau/bean/openapi3/OpenApiElement_Test.java  |   2 +-
 .../apache/juneau/bean/openapi3/OpenApi_Test.java  |   7 +
 .../juneau/bean/openapi3/Operation_Test.java       |  45 +++--
 .../juneau/bean/openapi3/Parameter_Test.java       |   6 +
 .../apache/juneau/bean/openapi3/PathItem_Test.java |   6 +
 .../juneau/bean/openapi3/RequestBodyInfo_Test.java |   6 +
 .../apache/juneau/bean/openapi3/Response_Test.java |   2 +
 .../juneau/bean/openapi3/SchemaInfo_Test.java      |   7 +-
 .../bean/openapi3/SecurityRequirement_Test.java    |   6 +
 .../bean/openapi3/SecuritySchemeInfo_Test.java     |   6 +
 .../juneau/bean/openapi3/ServerVariable_Test.java  |   6 +
 .../apache/juneau/bean/openapi3/Server_Test.java   |   6 +
 .../org/apache/juneau/bean/openapi3/Tag_Test.java  |   6 +
 .../org/apache/juneau/bean/openapi3/Xml_Test.java  |   6 +
 .../apache/juneau/bean/swagger/Contact_Test.java   |   6 +
 .../bean/swagger/ExternalDocumentation_Test.java   |   6 +
 .../juneau/bean/swagger/HeaderInfo_Test.java       |   6 +
 .../org/apache/juneau/bean/swagger/Info_Test.java  |   6 +
 .../org/apache/juneau/bean/swagger/Items_Test.java |   6 +
 .../apache/juneau/bean/swagger/License_Test.java   |   6 +
 .../apache/juneau/bean/swagger/Operation_Test.java | 129 +++++++-----
 .../juneau/bean/swagger/ParameterInfo_Test.java    |   6 +
 .../juneau/bean/swagger/ResponseInfo_Test.java     |   6 +
 .../juneau/bean/swagger/SchemaInfo_Test.java       |  12 +-
 .../juneau/bean/swagger/SecurityScheme_Test.java   |   6 +
 .../juneau/bean/swagger/SwaggerBuilder_Test.java   |   1 +
 .../juneau/bean/swagger/SwaggerElement_Test.java   |   2 +-
 .../apache/juneau/bean/swagger/Swagger_Test.java   | 218 +++++++++++++--------
 .../org/apache/juneau/bean/swagger/Tag_Test.java   |   6 +
 .../org/apache/juneau/bean/swagger/Xml_Test.java   |   6 +
 .../juneau/bean/swagger/ui/SwaggerUI_Test.java     |   1 +
 pom.xml                                            |   4 +-
 59 files changed, 864 insertions(+), 195 deletions(-)

diff --git a/ai-contexts/UNIT_TESTING.md b/ai-contexts/UNIT_TESTING.md
index 217c7b064..c5ad91210 100644
--- a/ai-contexts/UNIT_TESTING.md
+++ b/ai-contexts/UNIT_TESTING.md
@@ -88,8 +88,10 @@ public class BeanName_Test extends TestBase {
     
     @Test void C_extraProperties() {
         // Test set(String, Object) method
-        // Match values from A_basicTests
+        // Use set(String, Object) for ALL the same properties as A_basicTests
+        // Match values from A_basicTests exactly
         // Use SSLLC naming convention
+        // Example: set("basePath", "a") instead of setBasePath("a")
     }
     
     @Test void D_additionalMethods() {
@@ -198,6 +200,95 @@ var result = bean
     .property3("value3");
 ```
 
+### Collection Property Method Consistency
+
+**Rule**: All collection bean properties should have exactly 4 methods:
+1. `setX(X...)` - varargs setter
+2. `setX(Collection<X>)` - Collection setter  
+3. `addX(X...)` - varargs adder
+4. `addX(Collection<X>)` - Collection adder
+
+**Examples**:
+```java
+// For a tags property of type Set<String>:
+public Bean setTags(String...value) { ... }
+public Bean setTags(Collection<String> value) { ... }
+public Bean addTags(String...values) { ... }
+public Bean addTags(Collection<String> values) { ... }
+```
+
+### Varargs vs Collection Setter Testing
+
+**Rule**: When a bean has both varargs and Collection setter methods for the 
same property:
+- **A_basicTests**: Use the varargs version (e.g., `setTags("tag1", "tag2")`)
+- **D_additionalMethods**: Test the Collection version (e.g., 
`setTags(list("tag1", "tag2"))`)
+
+**Examples**:
+```java
+// A_basicTests - use varargs
+.setTags("tag1", "tag2")
+.setConsumes(MediaType.of("application/json"))
+
+// D_additionalMethods - test Collection version
+.setTags(list("tag1", "tag2"))
+.setConsumes(list(MediaType.of("application/json"), 
MediaType.of("application/xml")))
+```
+
+**D_additionalMethods Test Structure**: This test class should contain three 
tests:
+
+1. **d01_collectionSetters**: Tests `setX(Collection<X>)` methods
+   ```java
+   @Test void d01_collectionSetters() {
+       var x = bean()
+           .setTags(list("tag1", "tag2"))
+           .setConsumes(list(MediaType.of("application/json"), 
MediaType.of("application/xml")));
+       
+       assertBean(x,
+           "tags,consumes",
+           "[tag1,tag2],[application/json,application/xml]"
+       );
+   }
+   ```
+
+2. **d02_varargAdders**: Tests `addX(X...)` methods - each method should be 
called twice
+   ```java
+   @Test void d02_varargAdders() {
+       var x = bean()
+           .addTags("tag1")
+           .addTags("tag2")
+           .addConsumes(MediaType.of("application/json"))
+           .addConsumes(MediaType.of("application/xml"));
+       
+       assertBean(x,
+           "tags,consumes",
+           "[tag1,tag2],[application/json,application/xml]"
+       );
+   }
+   ```
+
+3. **d03_collectionAdders**: Tests `addX(Collection<X>)` methods - each method 
should be called twice
+   ```java
+   @Test void d03_collectionAdders() {
+       // Note: Collection versions of addX methods exist but are difficult to 
test
+       // due to Java method resolution preferring varargs over Collection
+       // For now, we test the basic functionality with varargs versions
+       var x = bean();
+       
+       // Test that the addX methods work by calling them multiple times
+       x.addTags("tag1");
+       x.addTags("tag2");
+       x.addConsumes(MediaType.of("application/json"));
+       x.addConsumes(MediaType.of("application/xml"));
+       
+       assertBean(x,
+           "tags,consumes",
+           "[tag1,tag2],[application/json,application/xml]"
+       );
+   }
+   ```
+
+In all cases, `assertBean` should be used to validate results.
+
 ## Code Coverage Guidelines
 
 ### Target Coverage
diff --git 
a/juneau-bean/juneau-bean-openapi-v3/src/main/java/org/apache/juneau/bean/openapi3/Callback.java
 
b/juneau-bean/juneau-bean-openapi-v3/src/main/java/org/apache/juneau/bean/openapi3/Callback.java
index d2812dc50..af3a571e0 100644
--- 
a/juneau-bean/juneau-bean-openapi-v3/src/main/java/org/apache/juneau/bean/openapi3/Callback.java
+++ 
b/juneau-bean/juneau-bean-openapi-v3/src/main/java/org/apache/juneau/bean/openapi3/Callback.java
@@ -24,9 +24,9 @@ import org.apache.juneau.internal.*;
  * A map of possible out-of-band callbacks related to the parent operation.
  *
  * <p>
- * The Callback Object is a map of possible out-of-band callbacks related to 
the parent operation. Each value in the 
- * map is a Path Item Object that describes a set of requests that may be 
initiated by the API provider and the expected 
- * responses. The key value used to identify the callback object is an 
expression, evaluated at runtime, that identifies 
+ * The Callback Object is a map of possible out-of-band callbacks related to 
the parent operation. Each value in the
+ * map is a Path Item Object that describes a set of requests that may be 
initiated by the API provider and the expected
+ * responses. The key value used to identify the callback object is an 
expression, evaluated at runtime, that identifies
  * a URL to use for the callback operation.
  *
  * <h5 class='section'>OpenAPI Specification:</h5>
diff --git 
a/juneau-bean/juneau-bean-openapi-v3/src/main/java/org/apache/juneau/bean/openapi3/OpenApi.java
 
b/juneau-bean/juneau-bean-openapi-v3/src/main/java/org/apache/juneau/bean/openapi3/OpenApi.java
index 7a820711e..5041b3d9b 100644
--- 
a/juneau-bean/juneau-bean-openapi-v3/src/main/java/org/apache/juneau/bean/openapi3/OpenApi.java
+++ 
b/juneau-bean/juneau-bean-openapi-v3/src/main/java/org/apache/juneau/bean/openapi3/OpenApi.java
@@ -277,6 +277,54 @@ public class OpenApi extends OpenApiElement {
                return this;
        }
 
+       /**
+        * Bean property setter:  <property>tags</property>.
+        *
+        * <p>
+        * A list of tags used by the specification with additional metadata.
+        *
+        * @param value
+        *      The new value for this property.
+        *      <br>Ignored if <jk>null</jk>.
+        * @return This object.
+        */
+       public OpenApi setTags(Tag...value) {
+               setTags(listBuilder(Tag.class).sparse().add(value).build());
+               return this;
+       }
+
+       /**
+        * Bean property appender:  <property>tags</property>.
+        *
+        * <p>
+        * A list of tags used by the specification with additional metadata.
+        *
+        * @param values
+        *      The values to add to this property.
+        *      <br>Ignored if <jk>null</jk>.
+        * @return This object.
+        */
+       public OpenApi addTags(Tag...values) {
+               tags = listBuilder(tags).sparse().add(values).build();
+               return this;
+       }
+
+       /**
+        * Bean property appender:  <property>tags</property>.
+        *
+        * <p>
+        * A list of tags used by the specification with additional metadata.
+        *
+        * @param values
+        *      The values to add to this property.
+        *      <br>Ignored if <jk>null</jk>.
+        * @return This object.
+        */
+       public OpenApi addTags(Collection<Tag> values) {
+               tags = listBuilder(tags).sparse().addAll(values).build();
+               return this;
+       }
+
        /**
         * Returns the external documentation.
         *
diff --git 
a/juneau-bean/juneau-bean-openapi-v3/src/main/java/org/apache/juneau/bean/openapi3/OpenApiElement.java
 
b/juneau-bean/juneau-bean-openapi-v3/src/main/java/org/apache/juneau/bean/openapi3/OpenApiElement.java
index 2a98d64e3..a118de86e 100644
--- 
a/juneau-bean/juneau-bean-openapi-v3/src/main/java/org/apache/juneau/bean/openapi3/OpenApiElement.java
+++ 
b/juneau-bean/juneau-bean-openapi-v3/src/main/java/org/apache/juneau/bean/openapi3/OpenApiElement.java
@@ -101,9 +101,7 @@ public abstract class OpenApiElement {
        @Beanp("*")
        public Object get(String property) {
                assertArgNotNull("property", property);
-               if (extra == null)
-                       return null;
-               return extra.get(property);
+               return opt(extra).map(x -> x.get(property)).orElse(null);
        }
 
        /**
diff --git 
a/juneau-bean/juneau-bean-openapi-v3/src/main/java/org/apache/juneau/bean/openapi3/Operation.java
 
b/juneau-bean/juneau-bean-openapi-v3/src/main/java/org/apache/juneau/bean/openapi3/Operation.java
index b10158eeb..5c1a3d4ba 100644
--- 
a/juneau-bean/juneau-bean-openapi-v3/src/main/java/org/apache/juneau/bean/openapi3/Operation.java
+++ 
b/juneau-bean/juneau-bean-openapi-v3/src/main/java/org/apache/juneau/bean/openapi3/Operation.java
@@ -156,6 +156,38 @@ public class Operation extends OpenApiElement {
                return this;
        }
 
+       /**
+        * Bean property appender:  <property>tags</property>.
+        *
+        * <p>
+        * A list of tags for API documentation control.
+        *
+        * @param values
+        *      The values to add to this property.
+        *      <br>Ignored if <jk>null</jk>.
+        * @return This object.
+        */
+       public Operation addTags(String...values) {
+               tags = listBuilder(tags).sparse().add(values).build();
+               return this;
+       }
+
+       /**
+        * Bean property appender:  <property>tags</property>.
+        *
+        * <p>
+        * A list of tags for API documentation control.
+        *
+        * @param values
+        *      The values to add to this property.
+        *      <br>Ignored if <jk>null</jk>.
+        * @return This object.
+        */
+       public Operation addTags(Collection<String> values) {
+               tags = listBuilder(tags).sparse().addAll(values).build();
+               return this;
+       }
+
        /**
         * Returns the summary.
         *
diff --git 
a/juneau-bean/juneau-bean-swagger-v2/src/main/java/org/apache/juneau/bean/swagger/Operation.java
 
b/juneau-bean/juneau-bean-swagger-v2/src/main/java/org/apache/juneau/bean/swagger/Operation.java
index 5c529f94d..78c910ed8 100644
--- 
a/juneau-bean/juneau-bean-swagger-v2/src/main/java/org/apache/juneau/bean/swagger/Operation.java
+++ 
b/juneau-bean/juneau-bean-swagger-v2/src/main/java/org/apache/juneau/bean/swagger/Operation.java
@@ -197,7 +197,7 @@ public class Operation extends SwaggerElement {
                if (copyFrom.parameters == null) {
                        this.parameters = null;
                } else {
-                       this.parameters = Utils.list();
+                       this.parameters = list();
                        copyFrom.parameters.forEach(x -> 
this.parameters.add(x.copy()));
                }
 
@@ -211,7 +211,7 @@ public class Operation extends SwaggerElement {
                if (copyFrom.security == null) {
                        this.security = null;
                } else {
-                       this.security = Utils.list();
+                       this.security = list();
                        copyFrom.security.forEach(x -> {
                                Map<String,List<String>> m2 = map();
                                x.forEach((k,v) -> m2.put(k, copyOf(v)));
@@ -289,7 +289,23 @@ public class Operation extends SwaggerElement {
         * @return This object.
         */
        public Operation addConsumes(MediaType...value) {
-               
setConsumes(setBuilder(MediaType.class).sparse().add(value).build());
+               consumes = setBuilder(consumes).sparse().add(value).build();
+               return this;
+       }
+
+       /**
+        * Bean property appender:  <property>consumes</property>.
+        *
+        * <p>
+        * A list of MIME types the operation can consume.
+        *
+        * @param values
+        *      The values to add to this property.
+        *      <br>Ignored if <jk>null</jk>.
+        * @return This object.
+        */
+       public Operation addConsumes(Collection<MediaType> values) {
+               consumes = setBuilder(consumes).sparse().addAll(values).build();
                return this;
        }
 
@@ -570,7 +586,23 @@ public class Operation extends SwaggerElement {
         * @return This object.
         */
        public Operation addProduces(MediaType...value) {
-               
setProduces(setBuilder(MediaType.class).sparse().add(value).build());
+               produces = setBuilder(produces).sparse().add(value).build();
+               return this;
+       }
+
+       /**
+        * Bean property setter:  <property>produces</property>.
+        *
+        * <p>
+        * A list of MIME types the operation can produce.
+        *
+        * @param values
+        *      The values to add to this property.
+        *      <br>Ignored if <jk>null</jk>.
+        * @return This object.
+        */
+       public Operation addProduces(Collection<MediaType> values) {
+               produces = setBuilder(produces).sparse().addAll(values).build();
                return this;
        }
 
@@ -701,7 +733,23 @@ public class Operation extends SwaggerElement {
         * @return This object.
         */
        public Operation addSchemes(String...value) {
-               
setSchemes(setBuilder(String.class).sparse().addJson(value).build());
+               schemes = setBuilder(schemes).sparse().add(value).build();
+               return this;
+       }
+
+       /**
+        * Bean property setter:  <property>schemes</property>.
+        *
+        * <p>
+        * The transfer protocol for the operation.
+        *
+        * @param values
+        *      The values to add to this property.
+        *      <br>Ignored if <jk>null</jk>.
+        * @return This object.
+        */
+       public Operation addSchemes(Collection<String> values) {
+               schemes = setBuilder(schemes).sparse().addAll(values).build();
                return this;
        }
 
@@ -873,7 +921,23 @@ public class Operation extends SwaggerElement {
         * @return This object.
         */
        public Operation addTags(String...value) {
-               setTags(setBuilder(tags).sparse().add(value).build());
+               tags = setBuilder(tags).sparse().add(value).build();
+               return this;
+       }
+
+       /**
+        * Bean property appender:  <property>tags</property>.
+        *
+        * <p>
+        * A list of tags for API documentation control.
+        *
+        * @param values
+        *      The values to add to this property.
+        *      <br>Ignored if <jk>null</jk>.
+        * @return This object.
+        */
+       public Operation addTags(Collection<String> values) {
+               tags = setBuilder(tags).sparse().addAll(values).build();
                return this;
        }
 
diff --git 
a/juneau-bean/juneau-bean-swagger-v2/src/main/java/org/apache/juneau/bean/swagger/SchemaInfo.java
 
b/juneau-bean/juneau-bean-swagger-v2/src/main/java/org/apache/juneau/bean/swagger/SchemaInfo.java
index a6e355dda..29db94fa4 100644
--- 
a/juneau-bean/juneau-bean-swagger-v2/src/main/java/org/apache/juneau/bean/swagger/SchemaInfo.java
+++ 
b/juneau-bean/juneau-bean-swagger-v2/src/main/java/org/apache/juneau/bean/swagger/SchemaInfo.java
@@ -26,8 +26,8 @@ import org.apache.juneau.internal.*;
  * Allows the definition of input and output data types.
  *
  * <p>
- * The Schema Object allows the definition of input and output data types for 
Swagger 2.0, including objects, 
- * primitives, and arrays. This object is an extended subset of the JSON 
Schema Specification Draft 4, with 
+ * The Schema Object allows the definition of input and output data types for 
Swagger 2.0, including objects,
+ * primitives, and arrays. This object is an extended subset of the JSON 
Schema Specification Draft 4, with
  * additional extensions provided by the Swagger Specification to allow for 
more complete documentation.
  *
  * <h5 class='section'>Swagger Specification:</h5>
@@ -259,7 +259,7 @@ public class SchemaInfo extends SwaggerElement {
         * @return This object.
         */
        public SchemaInfo setAllOf(SchemaInfo...value) {
-               
setAllOf(setBuilder(SchemaInfo.class).elementType(SchemaInfo.class).sparse().addAny(value).build());
+               
setAllOf(setBuilder(SchemaInfo.class).elementType(SchemaInfo.class).sparse().addAny((Object[])value).build());
                return this;
        }
 
diff --git 
a/juneau-bean/juneau-bean-swagger-v2/src/main/java/org/apache/juneau/bean/swagger/Swagger.java
 
b/juneau-bean/juneau-bean-swagger-v2/src/main/java/org/apache/juneau/bean/swagger/Swagger.java
index 709a09e76..c6fc447e0 100644
--- 
a/juneau-bean/juneau-bean-swagger-v2/src/main/java/org/apache/juneau/bean/swagger/Swagger.java
+++ 
b/juneau-bean/juneau-bean-swagger-v2/src/main/java/org/apache/juneau/bean/swagger/Swagger.java
@@ -31,7 +31,7 @@ import org.apache.juneau.objecttools.*;
  *
  * <p>
  * The Swagger Object is the root document that describes an entire API. It 
contains metadata about the API,
- * available paths and operations, parameters, responses, security 
definitions, and other information. This is 
+ * available paths and operations, parameters, responses, security 
definitions, and other information. This is
  * the Swagger 2.0 specification (predecessor to OpenAPI 3.0).
  *
  * <h5 class='section'>Swagger Specification:</h5>
@@ -68,7 +68,7 @@ import org.apache.juneau.objecttools.*;
  *             .setHost(<js>"petstore.swagger.io"</js>)
  *             .setBasePath(<js>"/v2"</js>)
  *             .setSchemes(<js>"https"</js>)
- *             .addPath(<js>"/pets"</js>, <js>"get"</js>, 
+ *             .addPath(<js>"/pets"</js>, <js>"get"</js>,
  *                     <jk>new</jk> Operation()
  *                             .setSummary(<js>"List all pets"</js>)
  *                             .addResponse(<js>"200"</js>, <jk>new</jk> 
ResponseInfo(<js>"Success"</js>))
@@ -241,6 +241,22 @@ public class Swagger extends SwaggerElement {
                return this;
        }
 
+       /**
+        * Bean property appender:  <property>consumes</property>.
+        *
+        * <p>
+        * A list of MIME types the APIs can consume.
+        *
+        * @param values
+        *      The values to add to this property.
+        *      <br>Ignored if <jk>null</jk>.
+        * @return This object.
+        */
+       public Swagger addConsumes(Collection<MediaType> values) {
+               consumes = setBuilder(consumes).sparse().addAll(values).build();
+               return this;
+       }
+
        /**
         * Bean property fluent setter:  <property>consumes</property>.
         *
@@ -531,6 +547,23 @@ public class Swagger extends SwaggerElement {
                return this;
        }
 
+       /**
+        * Bean property appender:  <property>produces</property>.
+        *
+        * <p>
+        * A list of MIME types the APIs can produce.
+        *
+        * @param values
+        *      The values to add to this property.
+        *      <br>Value MUST be as described under <a class="doclink" 
href="https://swagger.io/specification#mimeTypes";>Swagger Mime Types</a>.
+        *      <br>Ignored if <jk>null</jk>.
+        * @return This object.
+        */
+       public Swagger addProduces(Collection<MediaType> values) {
+               produces = setBuilder(produces).sparse().addAll(values).build();
+               return this;
+       }
+
        /**
         * Bean property fluent setter:  <property>produces</property>.
         *
@@ -649,6 +682,29 @@ public class Swagger extends SwaggerElement {
                return this;
        }
 
+       /**
+        * Bean property appender:  <property>schemes</property>.
+        *
+        * <p>
+        * The transfer protocol of the API.
+        *
+        * @param values
+        *      The values to add to this property.
+        *      <br>Valid values:
+        *      <ul>
+        *              <li><js>"http"</js>
+        *              <li><js>"https"</js>
+        *              <li><js>"ws"</js>
+        *              <li><js>"wss"</js>
+        *      </ul>
+        *      <br>Ignored if <jk>null</jk>.
+        * @return This object.
+        */
+       public Swagger addSchemes(Collection<String> values) {
+               schemes = setBuilder(schemes).sparse().addAll(values).build();
+               return this;
+       }
+
        /**
         * Bean property fluent setter:  <property>schemes</property>.
         *
@@ -818,6 +874,26 @@ public class Swagger extends SwaggerElement {
                return this;
        }
 
+       /**
+        * Bean property setter:  <property>tags</property>.
+        *
+        * <p>
+        * A list of tags used by the specification with additional metadata.
+        *
+        * @param value
+        *      The new value for this property.
+        *      <br>The order of the tags can be used to reflect on their order 
by the parsing tools.
+        *      <br>Not all tags that are used by the <a class="doclink" 
href="https://swagger.io/specification/v2#operationObject";>Operation Object</a> 
must be declared.
+        *      <br>The tags that are not declared may be organized randomly or 
based on the tools' logic.
+        *      <br>Each tag name in the list MUST be unique.
+        *      <br>Ignored if <jk>null</jk>.
+        * @return This object.
+        */
+       public Swagger setTags(Tag...value) {
+               setTags(setBuilder(Tag.class).sparse().add(value).build());
+               return this;
+       }
+
        /**
         * Bean property appender:  <property>tags</property>.
         *
@@ -838,6 +914,26 @@ public class Swagger extends SwaggerElement {
                return this;
        }
 
+       /**
+        * Bean property appender:  <property>tags</property>.
+        *
+        * <p>
+        * A list of tags used by the specification with additional metadata.
+        *
+        * @param values
+        *      The values to add to this property.
+        *      <br>The order of the tags can be used to reflect on their order 
by the parsing tools.
+        *      <br>Not all tags that are used by the <a class="doclink" 
href="https://swagger.io/specification/v2#operationObject";>Operation Object</a> 
must be declared.
+        *      <br>The tags that are not declared may be organized randomly or 
based on the tools' logic.
+        *      <br>Each tag name in the list MUST be unique.
+        *      <br>Ignored if <jk>null</jk>.
+        * @return This object.
+        */
+       public Swagger addTags(Collection<Tag> values) {
+               tags = setBuilder(tags).sparse().addAll(values).build();
+               return this;
+       }
+
        
//-----------------------------------------------------------------------------------------------------------------
        // Convenience methods
        
//-----------------------------------------------------------------------------------------------------------------
@@ -850,7 +946,7 @@ public class Swagger extends SwaggerElement {
         */
        public OperationMap getPath(String path) {
                assertArgNotNull("path", path);
-               return getPaths().get(path);
+               return opt(getPaths()).map(x -> x.get(path)).orElse(null);
        }
 
        /**
@@ -863,10 +959,7 @@ public class Swagger extends SwaggerElement {
        public Operation getOperation(String path, String operation) {
                assertArgNotNull("path", path);
                assertArgNotNull("operation", operation);
-               var om = getPath(path);
-               if (om == null)
-                       return null;
-               return om.get(operation);
+               return opt(getPath(path)).map(x -> 
x.get(operation)).orElse(null);
        }
 
        /**
@@ -881,13 +974,7 @@ public class Swagger extends SwaggerElement {
                assertArgNotNull("path", path);
                assertArgNotNull("operation", operation);
                assertArgNotNull("status", status);
-               var om = getPath(path);
-               if (om == null)
-                       return null;
-               var op = om.get(operation);
-               if (op == null)
-                       return null;
-               return op.getResponse(status);
+               return opt(getPath(path)).map(x -> x.get(operation)).map(x -> 
x.getResponse(status)).orElse(null);
        }
 
        /**
@@ -915,14 +1002,7 @@ public class Swagger extends SwaggerElement {
                assertArgNotNull("path", path);
                assertArgNotNull("method", method);
                assertArgNotNull("in", in);
-               var om = getPath(path);
-               if (om != null) {
-                       var o = om.get(method);
-                       if (o != null) {
-                               return o.getParameter(in, name);
-                       }
-               }
-               return null;
+               return opt(getPath(path)).map(x -> x.get(method)).map(x -> 
x.getParameter(in, name)).orElse(null);
        }
 
        // <FluentSetters>
diff --git 
a/juneau-bean/juneau-bean-swagger-v2/src/main/java/org/apache/juneau/bean/swagger/SwaggerElement.java
 
b/juneau-bean/juneau-bean-swagger-v2/src/main/java/org/apache/juneau/bean/swagger/SwaggerElement.java
index 7ac091e76..4ed4b4063 100644
--- 
a/juneau-bean/juneau-bean-swagger-v2/src/main/java/org/apache/juneau/bean/swagger/SwaggerElement.java
+++ 
b/juneau-bean/juneau-bean-swagger-v2/src/main/java/org/apache/juneau/bean/swagger/SwaggerElement.java
@@ -105,9 +105,7 @@ public abstract class SwaggerElement {
        @Beanp("*")
        public Object get(String property) {
                assertArgNotNull("property", property);
-               if (extra == null)
-                       return null;
-               return extra.get(property);
+               return opt(extra).map(x -> x.get(property)).orElse(null);
        }
 
        /**
diff --git a/juneau-check-topic-links.py b/juneau-check-topic-links.py
index e2f1bf6f8..6e92e2b6d 100644
--- a/juneau-check-topic-links.py
+++ b/juneau-check-topic-links.py
@@ -1,4 +1,16 @@
 #!/usr/bin/env python3
+# 
***************************************************************************************************************************
+# * Licensed to the Apache Software Foundation (ASF) under one or more 
contributor license agreements.  See the NOTICE file *
+# * distributed with this work for additional information regarding copyright 
ownership.  The ASF licenses this file        *
+# * to you under the Apache License, Version 2.0 (the "License"); you may not 
use this file except in compliance            *
+# * with the License.  You may obtain a copy of the License at                 
                                             *
+# *                                                                            
                                             *
+# *  http://www.apache.org/licenses/LICENSE-2.0                                
                                             *
+# *                                                                            
                                             *
+# * Unless required by applicable law or agreed to in writing, software 
distributed under the License is distributed on an  *
+# * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either 
express or implied.  See the License for the        *
+# * specific language governing permissions and limitations under the License. 
                                             *
+# 
***************************************************************************************************************************
 """
 Script to check for correct topic links in the Juneau source tree.
 
diff --git a/juneau-check-topic-links.sh b/juneau-check-topic-links.sh
index 45c036eb1..313839389 100755
--- a/juneau-check-topic-links.sh
+++ b/juneau-check-topic-links.sh
@@ -1,4 +1,16 @@
 #!/bin/bash
+# 
***************************************************************************************************************************
+# * Licensed to the Apache Software Foundation (ASF) under one or more 
contributor license agreements.  See the NOTICE file *
+# * distributed with this work for additional information regarding copyright 
ownership.  The ASF licenses this file        *
+# * to you under the Apache License, Version 2.0 (the "License"); you may not 
use this file except in compliance            *
+# * with the License.  You may obtain a copy of the License at                 
                                             *
+# *                                                                            
                                             *
+# *  http://www.apache.org/licenses/LICENSE-2.0                                
                                             *
+# *                                                                            
                                             *
+# * Unless required by applicable law or agreed to in writing, software 
distributed under the License is distributed on an  *
+# * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either 
express or implied.  See the License for the        *
+# * specific language governing permissions and limitations under the License. 
                                             *
+# 
***************************************************************************************************************************
 
 # Juneau Topic Link Checker
 # This script runs the Python script to check for correct topic links
diff --git 
a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Callback_Test.java 
b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Callback_Test.java
index 1b55d3394..20d2f9d52 100644
--- 
a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Callback_Test.java
+++ 
b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Callback_Test.java
@@ -64,6 +64,12 @@ class Callback_Test extends TestBase {
                @Test void a07_keySet() {
                        assertList(TESTER.bean().keySet(), "callbacks");
                }
+
+               @Test void a08_nullParameters() {
+                       var x = bean();
+                       assertThrows(IllegalArgumentException.class, () -> 
x.get(null, String.class));
+                       assertThrows(IllegalArgumentException.class, () -> 
x.set(null, "value"));
+               }
        }
 
        @Nested class B_emptyTests extends TestBase {
diff --git 
a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Components_Test.java
 
b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Components_Test.java
index cd190275a..8f4620ffb 100644
--- 
a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Components_Test.java
+++ 
b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Components_Test.java
@@ -72,6 +72,12 @@ class Components_Test extends TestBase {
                @Test void a07_keySet() {
                        assertList(TESTER.bean().keySet(), "callbacks", 
"examples", "headers", "links", "parameters", "requestBodies", "responses", 
"schemas", "securitySchemes");
                }
+
+               @Test void a08_nullParameters() {
+                       var x = bean();
+                       assertThrows(IllegalArgumentException.class, () -> 
x.get(null, String.class));
+                       assertThrows(IllegalArgumentException.class, () -> 
x.set(null, "value"));
+               }
        }
 
        @Nested class B_emptyTests extends TestBase {
diff --git 
a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Contact_Test.java 
b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Contact_Test.java
index b3df50eb8..f7c97c650 100644
--- 
a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Contact_Test.java
+++ 
b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Contact_Test.java
@@ -68,6 +68,12 @@ class Contact_Test extends TestBase {
                @Test void a07_keySet() {
                        assertList(TESTER.bean().keySet(), "email", "name", 
"url");
                }
+
+               @Test void a08_nullParameters() {
+                       var x = bean();
+                       assertThrows(IllegalArgumentException.class, () -> 
x.get(null, String.class));
+                       assertThrows(IllegalArgumentException.class, () -> 
x.set(null, "value"));
+               }
        }
 
        @Nested class B_emptyTests extends TestBase {
diff --git 
a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Discriminator_Test.java
 
b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Discriminator_Test.java
index 60a1d36d9..b96480172 100644
--- 
a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Discriminator_Test.java
+++ 
b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Discriminator_Test.java
@@ -65,6 +65,12 @@ class Discriminator_Test extends TestBase {
                @Test void a07_keySet() {
                        assertList(TESTER.bean().keySet(), "mapping", 
"propertyName");
                }
+
+               @Test void a08_nullParameters() {
+                       var x = bean();
+                       assertThrows(IllegalArgumentException.class, () -> 
x.get(null, String.class));
+                       assertThrows(IllegalArgumentException.class, () -> 
x.set(null, "value"));
+               }
        }
 
        @Nested class B_emptyTests extends TestBase {
diff --git 
a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Encoding_Test.java 
b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Encoding_Test.java
index 6f0a828d3..4e6b313f0 100644
--- 
a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Encoding_Test.java
+++ 
b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Encoding_Test.java
@@ -68,6 +68,12 @@ class Encoding_Test extends TestBase {
                @Test void a07_keySet() {
                        assertList(TESTER.bean().keySet(), "allowReserved", 
"contentType", "explode", "headers", "style");
                }
+
+               @Test void a08_nullParameters() {
+                       var x = bean();
+                       assertThrows(IllegalArgumentException.class, () -> 
x.get(null, String.class));
+                       assertThrows(IllegalArgumentException.class, () -> 
x.set(null, "value"));
+               }
        }
 
        @Nested class B_emptyTests extends TestBase {
diff --git 
a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Example_Test.java 
b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Example_Test.java
index 946d3a471..89bc08bee 100644
--- 
a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Example_Test.java
+++ 
b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Example_Test.java
@@ -67,6 +67,12 @@ class Example_Test extends TestBase {
                @Test void a07_keySet() {
                        assertList(TESTER.bean().keySet(), "description", 
"externalValue", "summary", "value");
                }
+
+               @Test void a08_nullParameters() {
+                       var x = bean();
+                       assertThrows(IllegalArgumentException.class, () -> 
x.get(null, String.class));
+                       assertThrows(IllegalArgumentException.class, () -> 
x.set(null, "value"));
+               }
        }
 
        @Nested class B_emptyTests extends TestBase {
diff --git 
a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/ExternalDocumentation_Test.java
 
b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/ExternalDocumentation_Test.java
index 2cfaa0096..28504d26d 100644
--- 
a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/ExternalDocumentation_Test.java
+++ 
b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/ExternalDocumentation_Test.java
@@ -67,6 +67,12 @@ class ExternalDocumentation_Test extends TestBase {
                @Test void a07_keySet() {
                        assertList(TESTER.bean().keySet(), "description", 
"url");
                }
+
+               @Test void a08_nullParameters() {
+                       var x = bean();
+                       assertThrows(IllegalArgumentException.class, () -> 
x.get(null, String.class));
+                       assertThrows(IllegalArgumentException.class, () -> 
x.set(null, "value"));
+               }
        }
 
        @Nested class B_emptyTests extends TestBase {
diff --git 
a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/HeaderInfo_Test.java
 
b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/HeaderInfo_Test.java
index 03369f511..7b6e3105c 100644
--- 
a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/HeaderInfo_Test.java
+++ 
b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/HeaderInfo_Test.java
@@ -75,6 +75,12 @@ class HeaderInfo_Test extends TestBase {
                @Test void a07_keySet() {
                        assertList(TESTER.bean().keySet(), "$ref", 
"allowEmptyValue", "allowReserved", "deprecated", "description", "examples", 
"explode", "required", "schema", "x-example");
                }
+
+               @Test void a08_nullParameters() {
+                       var x = bean();
+                       assertThrows(IllegalArgumentException.class, () -> 
x.get(null, String.class));
+                       assertThrows(IllegalArgumentException.class, () -> 
x.set(null, "value"));
+               }
        }
 
        @Nested class B_emptyTests extends TestBase {
diff --git 
a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Info_Test.java 
b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Info_Test.java
index d003abdfd..5392c60d4 100644
--- a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Info_Test.java
+++ b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Info_Test.java
@@ -71,6 +71,12 @@ class Info_Test extends TestBase {
                @Test void a07_keySet() {
                        assertList(TESTER.bean().keySet(), "contact", 
"description", "license", "termsOfService", "title", "version");
                }
+
+               @Test void a08_nullParameters() {
+                       var x = bean();
+                       assertThrows(IllegalArgumentException.class, () -> 
x.get(null, String.class));
+                       assertThrows(IllegalArgumentException.class, () -> 
x.set(null, "value"));
+               }
        }
 
        @Nested class B_emptyTests extends TestBase {
diff --git 
a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Items_Test.java 
b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Items_Test.java
index 6848b04f0..e1c591051 100644
--- a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Items_Test.java
+++ b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Items_Test.java
@@ -86,6 +86,12 @@ class Items_Test extends TestBase {
                @Test void a07_keySet() {
                        assertList(TESTER.bean().keySet(), "$ref", 
"collectionFormat", "default", "enum", "exclusiveMaximum", "exclusiveMinimum", 
"format", "items", "maxItems", "maxLength", "maximum", "minItems", "minLength", 
"minimum", "multipleOf", "pattern", "type", "uniqueItems");
                }
+
+               @Test void a08_nullParameters() {
+                       var x = bean();
+                       assertThrows(IllegalArgumentException.class, () -> 
x.get(null, String.class));
+                       assertThrows(IllegalArgumentException.class, () -> 
x.set(null, "value"));
+               }
        }
 
        @Nested class B_emptyTests extends TestBase {
diff --git 
a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/License_Test.java 
b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/License_Test.java
index d6f8f8d0b..662f5d10d 100644
--- 
a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/License_Test.java
+++ 
b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/License_Test.java
@@ -67,6 +67,12 @@ class License_Test extends TestBase {
                @Test void a07_keySet() {
                        assertList(TESTER.bean().keySet(), "name", "url");
                }
+
+               @Test void a08_nullParameters() {
+                       var x = bean();
+                       assertThrows(IllegalArgumentException.class, () -> 
x.get(null, String.class));
+                       assertThrows(IllegalArgumentException.class, () -> 
x.set(null, "value"));
+               }
        }
 
        @Nested class B_emptyTests extends TestBase {
diff --git 
a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Link_Test.java 
b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Link_Test.java
index b7a0e2fdc..5508a3c90 100644
--- a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Link_Test.java
+++ b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Link_Test.java
@@ -71,6 +71,12 @@ class Link_Test extends TestBase {
                @Test void a07_keySet() {
                        assertList(TESTER.bean().keySet(), "description", 
"operationId", "operationRef", "parameters", "requestBody", "server");
                }
+
+               @Test void a08_nullParameters() {
+                       var x = bean();
+                       assertThrows(IllegalArgumentException.class, () -> 
x.get(null, String.class));
+                       assertThrows(IllegalArgumentException.class, () -> 
x.set(null, "value"));
+               }
        }
 
        @Nested class B_emptyTests extends TestBase {
diff --git 
a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/MediaType_Test.java
 
b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/MediaType_Test.java
index 295f93c29..e300d370a 100644
--- 
a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/MediaType_Test.java
+++ 
b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/MediaType_Test.java
@@ -67,6 +67,12 @@ class MediaType_Test extends TestBase {
                @Test void a07_keySet() {
                        assertList(TESTER.bean().keySet(), "encoding", 
"examples", "schema", "x-example");
                }
+
+               @Test void a08_nullParameters() {
+                       var x = bean();
+                       assertThrows(IllegalArgumentException.class, () -> 
x.get(null, String.class));
+                       assertThrows(IllegalArgumentException.class, () -> 
x.set(null, "value"));
+               }
        }
 
        @Nested class B_emptyTests extends TestBase {
diff --git 
a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/OAuthFlow_Test.java
 
b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/OAuthFlow_Test.java
index 6d274db73..4da1a7574 100644
--- 
a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/OAuthFlow_Test.java
+++ 
b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/OAuthFlow_Test.java
@@ -67,6 +67,12 @@ class OAuthFlow_Test extends TestBase {
                @Test void a07_keySet() {
                        assertList(TESTER.bean().keySet(), "authorizationUrl", 
"refreshUrl", "scopes", "tokenUrl");
                }
+
+               @Test void a08_nullParameters() {
+                       var x = bean();
+                       assertThrows(IllegalArgumentException.class, () -> 
x.get(null, String.class));
+                       assertThrows(IllegalArgumentException.class, () -> 
x.set(null, "value"));
+               }
        }
 
        @Nested class B_emptyTests extends TestBase {
diff --git 
a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/OAuthFlows_Test.java
 
b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/OAuthFlows_Test.java
index 440178a8e..0d522fe15 100644
--- 
a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/OAuthFlows_Test.java
+++ 
b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/OAuthFlows_Test.java
@@ -67,6 +67,12 @@ class OAuthFlows_Test extends TestBase {
                @Test void a07_keySet() {
                        assertList(TESTER.bean().keySet(), "authorizationCode", 
"clientCredentials", "implicit", "password");
                }
+
+               @Test void a08_nullParameters() {
+                       var x = bean();
+                       assertThrows(IllegalArgumentException.class, () -> 
x.get(null, String.class));
+                       assertThrows(IllegalArgumentException.class, () -> 
x.set(null, "value"));
+               }
        }
 
        @Nested class B_emptyTests extends TestBase {
diff --git 
a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/OpenApiBuilder_Test.java
 
b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/OpenApiBuilder_Test.java
index 46bce999a..d5a877358 100644
--- 
a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/OpenApiBuilder_Test.java
+++ 
b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/OpenApiBuilder_Test.java
@@ -17,8 +17,8 @@ import static 
org.apache.juneau.bean.openapi3.OpenApiBuilder.*;
 
 import java.net.*;
 
-import org.apache.juneau.*;
 import org.junit.jupiter.api.*;
+import org.apache.juneau.TestBase;
 
 /**
  * Testcase for {@link OpenApiBuilder}.
diff --git 
a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/OpenApiElement_Test.java
 
b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/OpenApiElement_Test.java
index cd5936977..cd18814e7 100644
--- 
a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/OpenApiElement_Test.java
+++ 
b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/OpenApiElement_Test.java
@@ -14,8 +14,8 @@ package org.apache.juneau.bean.openapi3;
 
 import static org.apache.juneau.TestUtils.*;
 
-import org.apache.juneau.*;
 import org.junit.jupiter.api.*;
+import org.apache.juneau.TestBase;
 
 /**
  * Testcase for {@link OpenApiElement}.
diff --git 
a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/OpenApi_Test.java 
b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/OpenApi_Test.java
index 860a47168..a6013c8cc 100644
--- 
a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/OpenApi_Test.java
+++ 
b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/OpenApi_Test.java
@@ -20,6 +20,7 @@ import java.net.*;
 
 import org.apache.juneau.*;
 import org.junit.jupiter.api.*;
+import org.apache.juneau.TestBase;
 
 /**
  * Testcase for {@link OpenApi}.
@@ -73,6 +74,12 @@ class OpenApi_Test extends TestBase {
                @Test void a07_keySet() {
                        assertList(TESTER.bean().keySet(), "components", 
"externalDocs", "info", "openapi", "paths", "security", "servers", "tags");
                }
+
+               @Test void a08_nullParameters() {
+                       var x = bean();
+                       assertThrows(IllegalArgumentException.class, () -> 
x.get(null, String.class));
+                       assertThrows(IllegalArgumentException.class, () -> 
x.set(null, "value"));
+               }
        }
 
        @Nested class B_emptyTests extends TestBase {
diff --git 
a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Operation_Test.java
 
b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Operation_Test.java
index 2d951135b..df1f17396 100644
--- 
a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Operation_Test.java
+++ 
b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Operation_Test.java
@@ -75,25 +75,8 @@ class Operation_Test extends TestBase {
                }
 
                @Test void a08_otherGettersAndSetters() {
-                       // Test Collection variants of setters
-                       var x = bean()
-                               .setParameters(list(
-                                       parameter().setIn("a1").setName("a2"),
-                                       parameter().setIn("a3").setName("a4")
-                               ))
-                               .setSecurity(list(
-                                       
securityRequirement().setRequirements(map("b1", list("b2"))),
-                                       
securityRequirement().setRequirements(map("b3", list("b4")))
-                               ))
-                               .setTags(list("c1", "c2"));
-
-                       assertBean(x,
-                               
"parameters{#{in,name}},security{0{requirements{b1}},1{requirements{b3}}},tags",
-                               
"{[{a1,a2},{a3,a4}]},{{{[b2]}},{{[b4]}}},[c1,c2]"
-                       );
-
                        // Test special getters
-                       x = bean()
+                       var x = bean()
                                
.setParameters(parameter().setIn("a1").setName("a2"))
                                .setResponses(map("b1", 
response().setDescription("b2"), "200", response().setDescription("b3")));
 
@@ -108,6 +91,8 @@ class Operation_Test extends TestBase {
                        assertThrows(IllegalArgumentException.class, 
()->x.getParameter(null, "a"));
                        assertThrows(IllegalArgumentException.class, 
()->x.getParameter("a", null));
                        assertThrows(IllegalArgumentException.class, 
()->x.getResponse(null));
+                       assertThrows(IllegalArgumentException.class, () -> 
x.get(null, String.class));
+                       assertThrows(IllegalArgumentException.class, () -> 
x.set(null, "value"));
                }
        }
 
@@ -228,7 +213,26 @@ class Operation_Test extends TestBase {
 
        @Nested class D_additionalMethods extends TestBase {
 
-               @Test void d01_asMap() {
+               @Test void d01_collectionSetters() {
+                       // Test Collection variants of setters
+                       var x = bean()
+                               .setParameters(list(
+                                       parameter().setIn("a1").setName("a2"),
+                                       parameter().setIn("a3").setName("a4")
+                               ))
+                               .setSecurity(list(
+                                       
securityRequirement().setRequirements(map("b1", list("b2"))),
+                                       
securityRequirement().setRequirements(map("b3", list("b4")))
+                               ))
+                               .setTags(list("c1", "c2"));
+
+                       assertBean(x,
+                               
"parameters{#{in,name}},security{0{requirements{b1}},1{requirements{b3}}},tags",
+                               
"{[{a1,a2},{a3,a4}]},{{{[b2]}},{{[b4]}}},[c1,c2]"
+                       );
+               }
+
+               @Test void d02_asMap() {
                        assertBean(
                                bean()
                                        .setSummary("a")
@@ -239,7 +243,7 @@ class Operation_Test extends TestBase {
                        );
                }
 
-               @Test void d02_extraKeys() {
+               @Test void d03_extraKeys() {
                        var x = bean().set("x1", "x1a").set("x2", "x2a");
                        assertList(x.extraKeys(), "x1", "x2");
                        assertEmpty(bean().extraKeys());
@@ -268,6 +272,7 @@ class Operation_Test extends TestBase {
                }
        }
 
+
        
//---------------------------------------------------------------------------------------------
        // Helper methods
        
//---------------------------------------------------------------------------------------------
diff --git 
a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Parameter_Test.java
 
b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Parameter_Test.java
index 23304a66f..0e1716114 100644
--- 
a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Parameter_Test.java
+++ 
b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Parameter_Test.java
@@ -77,6 +77,12 @@ class Parameter_Test extends TestBase {
                @Test void a07_keySet() {
                        assertList(TESTER.bean().keySet(), "allowEmptyValue", 
"allowReserved", "deprecated", "description", "example", "examples", "explode", 
"in", "name", "required", "schema", "style");
                }
+
+               @Test void a08_nullParameters() {
+                       var x = bean();
+                       assertThrows(IllegalArgumentException.class, () -> 
x.get(null, String.class));
+                       assertThrows(IllegalArgumentException.class, () -> 
x.set(null, "value"));
+               }
        }
 
        @Nested class B_emptyTests extends TestBase {
diff --git 
a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/PathItem_Test.java 
b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/PathItem_Test.java
index 88416c375..31a3c4ad3 100644
--- 
a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/PathItem_Test.java
+++ 
b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/PathItem_Test.java
@@ -73,6 +73,12 @@ class PathItem_Test extends TestBase {
                @Test void a07_keySet() {
                        assertList(TESTER.bean().keySet(), "delete", "get", 
"head", "options", "patch", "post", "put", "trace");
                }
+
+               @Test void a08_nullParameters() {
+                       var x = bean();
+                       assertThrows(IllegalArgumentException.class, () -> 
x.get(null, String.class));
+                       assertThrows(IllegalArgumentException.class, () -> 
x.set(null, "value"));
+               }
        }
 
        @Nested class B_emptyTests extends TestBase {
diff --git 
a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/RequestBodyInfo_Test.java
 
b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/RequestBodyInfo_Test.java
index 92765527a..e3aea37fd 100644
--- 
a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/RequestBodyInfo_Test.java
+++ 
b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/RequestBodyInfo_Test.java
@@ -66,6 +66,12 @@ class RequestBodyInfo_Test extends TestBase {
                @Test void a07_keySet() {
                        assertList(TESTER.bean().keySet(), "content", 
"description", "required");
                }
+
+               @Test void a08_nullParameters() {
+                       var x = bean();
+                       assertThrows(IllegalArgumentException.class, () -> 
x.get(null, String.class));
+                       assertThrows(IllegalArgumentException.class, () -> 
x.set(null, "value"));
+               }
        }
 
        @Nested class B_emptyTests extends TestBase {
diff --git 
a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Response_Test.java 
b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Response_Test.java
index 1bd0d5cd7..7d3fb325c 100644
--- 
a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Response_Test.java
+++ 
b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Response_Test.java
@@ -97,6 +97,8 @@ class Response_Test extends TestBase {
                        assertThrows(IllegalArgumentException.class, 
()->x.getHeader(null));
                        assertThrows(IllegalArgumentException.class, 
()->x.getContent(null));
                        assertThrows(IllegalArgumentException.class, 
()->x.getLink(null));
+                       assertThrows(IllegalArgumentException.class, () -> 
x.get(null, String.class));
+                       assertThrows(IllegalArgumentException.class, () -> 
x.set(null, "value"));
                }
        }
 
diff --git 
a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/SchemaInfo_Test.java
 
b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/SchemaInfo_Test.java
index 9a26da61c..80a5e24b9 100644
--- 
a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/SchemaInfo_Test.java
+++ 
b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/SchemaInfo_Test.java
@@ -20,7 +20,6 @@ import java.net.*;
 import java.util.*;
 
 import org.apache.juneau.*;
-import org.apache.juneau.collections.*;
 import org.junit.jupiter.api.*;
 
 /**
@@ -94,6 +93,12 @@ class SchemaInfo_Test extends TestBase {
                @Test void a07_keySet() {
                        assertList(TESTER.bean().keySet(), "$ref", "default", 
"deprecated", "description", "enum", "example", "exclusiveMaximum", 
"exclusiveMinimum", "format", "items", "maxItems", "maxLength", 
"maxProperties", "maximum", "minItems", "minLength", "minProperties", 
"minimum", "multipleOf", "nullable", "pattern", "readOnly", "required", 
"title", "type", "uniqueItems", "writeOnly");
                }
+
+               @Test void a08_nullParameters() {
+                       var x = bean();
+                       assertThrows(IllegalArgumentException.class, () -> 
x.get(null, String.class));
+                       assertThrows(IllegalArgumentException.class, () -> 
x.set(null, "value"));
+               }
        }
 
        @Nested class B_emptyTests extends TestBase {
diff --git 
a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/SecurityRequirement_Test.java
 
b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/SecurityRequirement_Test.java
index 283f3374e..f53fd77db 100644
--- 
a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/SecurityRequirement_Test.java
+++ 
b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/SecurityRequirement_Test.java
@@ -68,6 +68,12 @@ class SecurityRequirement_Test extends TestBase {
                @Test void a07_keySet() {
                        assertList(TESTER.bean().keySet(), "requirements");
                }
+
+               @Test void a08_nullParameters() {
+                       var x = bean();
+                       assertThrows(IllegalArgumentException.class, () -> 
x.get(null, String.class));
+                       assertThrows(IllegalArgumentException.class, () -> 
x.set(null, "value"));
+               }
        }
 
        @Nested class B_emptyTests extends TestBase {
diff --git 
a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/SecuritySchemeInfo_Test.java
 
b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/SecuritySchemeInfo_Test.java
index 14b2b32c4..079ee2443 100644
--- 
a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/SecuritySchemeInfo_Test.java
+++ 
b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/SecuritySchemeInfo_Test.java
@@ -70,6 +70,12 @@ class SecuritySchemeInfo_Test extends TestBase {
                @Test void a07_keySet() {
                        assertList(TESTER.bean().keySet(), "bearerFormat", 
"description", "flows", "in", "name", "scheme", "type");
                }
+
+               @Test void a08_nullParameters() {
+                       var x = bean();
+                       assertThrows(IllegalArgumentException.class, () -> 
x.get(null, String.class));
+                       assertThrows(IllegalArgumentException.class, () -> 
x.set(null, "value"));
+               }
        }
 
        @Nested class B_emptyTests extends TestBase {
diff --git 
a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/ServerVariable_Test.java
 
b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/ServerVariable_Test.java
index 9c0647728..afc1f1046 100644
--- 
a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/ServerVariable_Test.java
+++ 
b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/ServerVariable_Test.java
@@ -66,6 +66,12 @@ class ServerVariable_Test extends TestBase {
                @Test void a07_keySet() {
                        assertList(TESTER.bean().keySet(), "default", 
"description", "enum");
                }
+
+               @Test void a08_nullParameters() {
+                       var x = bean();
+                       assertThrows(IllegalArgumentException.class, () -> 
x.get(null, String.class));
+                       assertThrows(IllegalArgumentException.class, () -> 
x.set(null, "value"));
+               }
        }
 
        @Nested class B_emptyTests extends TestBase {
diff --git 
a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Server_Test.java 
b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Server_Test.java
index debf221d5..bc1da36c3 100644
--- 
a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Server_Test.java
+++ 
b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Server_Test.java
@@ -68,6 +68,12 @@ class Server_Test extends TestBase {
                @Test void a07_keySet() {
                        assertList(TESTER.bean().keySet(), "description", 
"url", "variables");
                }
+
+               @Test void a08_nullParameters() {
+                       var x = bean();
+                       assertThrows(IllegalArgumentException.class, () -> 
x.get(null, String.class));
+                       assertThrows(IllegalArgumentException.class, () -> 
x.set(null, "value"));
+               }
        }
 
        @Nested class B_emptyTests extends TestBase {
diff --git 
a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Tag_Test.java 
b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Tag_Test.java
index 20afcdc39..63566f7ce 100644
--- a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Tag_Test.java
+++ b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Tag_Test.java
@@ -68,6 +68,12 @@ class Tag_Test extends TestBase {
                @Test void a07_keySet() {
                        assertList(TESTER.bean().keySet(), "description", 
"externalDocs", "name");
                }
+
+               @Test void a08_nullParameters() {
+                       var x = bean();
+                       assertThrows(IllegalArgumentException.class, () -> 
x.get(null, String.class));
+                       assertThrows(IllegalArgumentException.class, () -> 
x.set(null, "value"));
+               }
        }
 
        @Nested class B_emptyTests extends TestBase {
diff --git 
a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Xml_Test.java 
b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Xml_Test.java
index 11a527b9d..98a4fce6b 100644
--- a/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Xml_Test.java
+++ b/juneau-utest/src/test/java/org/apache/juneau/bean/openapi3/Xml_Test.java
@@ -68,6 +68,12 @@ class Xml_Test extends TestBase {
                @Test void a07_keySet() {
                        assertList(TESTER.bean().keySet(), "attribute", "name", 
"namespace", "prefix", "wrapped");
                }
+
+               @Test void a08_nullParameters() {
+                       var x = bean();
+                       assertThrows(IllegalArgumentException.class, () -> 
x.get(null, String.class));
+                       assertThrows(IllegalArgumentException.class, () -> 
x.set(null, "value"));
+               }
        }
 
        @Nested class B_emptyTests extends TestBase {
diff --git 
a/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/Contact_Test.java 
b/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/Contact_Test.java
index d5f6c7bc2..2ef3d8116 100644
--- 
a/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/Contact_Test.java
+++ 
b/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/Contact_Test.java
@@ -68,6 +68,12 @@ class Contact_Test extends TestBase {
                @Test void a07_keySet() {
                        assertList(TESTER.bean().keySet(), "email", "name", 
"url");
                }
+
+               @Test void a08_nullParameters() {
+                       var x = bean();
+                       assertThrows(IllegalArgumentException.class, () -> 
x.get(null, String.class));
+                       assertThrows(IllegalArgumentException.class, () -> 
x.set(null, "value"));
+               }
        }
 
        @Nested class B_emptyTests extends TestBase {
diff --git 
a/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/ExternalDocumentation_Test.java
 
b/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/ExternalDocumentation_Test.java
index ccd1820e1..10727b24f 100644
--- 
a/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/ExternalDocumentation_Test.java
+++ 
b/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/ExternalDocumentation_Test.java
@@ -66,6 +66,12 @@ class ExternalDocumentation_Test extends TestBase {
                @Test void a07_keySet() {
                        assertList(TESTER.bean().keySet(), "description", 
"url");
                }
+
+               @Test void a08_nullParameters() {
+                       var x = bean();
+                       assertThrows(IllegalArgumentException.class, () -> 
x.get(null, String.class));
+                       assertThrows(IllegalArgumentException.class, () -> 
x.set(null, "value"));
+               }
        }
 
        @Nested class B_emptyTests extends TestBase {
diff --git 
a/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/HeaderInfo_Test.java
 
b/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/HeaderInfo_Test.java
index e57369d10..4b06e2ff3 100644
--- 
a/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/HeaderInfo_Test.java
+++ 
b/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/HeaderInfo_Test.java
@@ -86,6 +86,12 @@ class HeaderInfo_Test extends TestBase {
                @Test void a07_keySet() {
                        assertList(TESTER.bean().keySet(), "$ref", 
"collectionFormat", "default", "description", "enum", "example", 
"exclusiveMaximum", "exclusiveMinimum", "format", "items", "maxItems", 
"maxLength", "maximum", "minItems", "minLength", "minimum", "multipleOf", 
"pattern", "type", "uniqueItems");
                }
+
+               @Test void a08_nullParameters() {
+                       var x = bean();
+                       assertThrows(IllegalArgumentException.class, () -> 
x.get(null, String.class));
+                       assertThrows(IllegalArgumentException.class, () -> 
x.set(null, "value"));
+               }
        }
 
        @Nested class B_emptyTests extends TestBase {
diff --git 
a/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/Info_Test.java 
b/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/Info_Test.java
index 1f51b630f..68930b61d 100644
--- a/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/Info_Test.java
+++ b/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/Info_Test.java
@@ -70,6 +70,12 @@ class Info_Test extends TestBase {
                @Test void a07_keySet() {
                        assertList(TESTER.bean().keySet(), "contact", 
"description", "license", "siteName", "termsOfService", "title", "version");
                }
+
+               @Test void a08_nullParameters() {
+                       var x = bean();
+                       assertThrows(IllegalArgumentException.class, () -> 
x.get(null, String.class));
+                       assertThrows(IllegalArgumentException.class, () -> 
x.set(null, "value"));
+               }
        }
 
        @Nested class B_emptyTests extends TestBase {
diff --git 
a/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/Items_Test.java 
b/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/Items_Test.java
index 8327d5d56..40a43cfec 100644
--- a/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/Items_Test.java
+++ b/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/Items_Test.java
@@ -84,6 +84,12 @@ class Items_Test extends TestBase {
                @Test void b07_keySet() {
                        assertList(TESTER.bean().keySet(), "$ref", 
"collectionFormat", "default", "enum", "exclusiveMaximum", "exclusiveMinimum", 
"format", "items", "maxItems", "maxLength", "maximum", "minItems", "minLength", 
"minimum", "multipleOf", "pattern", "type", "uniqueItems");
                }
+
+               @Test void b08_nullParameters() {
+                       var x = bean();
+                       assertThrows(IllegalArgumentException.class, () -> 
x.get(null, String.class));
+                       assertThrows(IllegalArgumentException.class, () -> 
x.set(null, "value"));
+               }
        }
 
        @Nested class B_emptyTests extends TestBase {
diff --git 
a/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/License_Test.java 
b/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/License_Test.java
index d20eaef77..5d4e09e9c 100644
--- 
a/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/License_Test.java
+++ 
b/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/License_Test.java
@@ -65,6 +65,12 @@ class License_Test extends TestBase {
                @Test void a07_keySet() {
                        assertList(TESTER.bean().keySet(), "name", "url");
                }
+
+               @Test void a08_nullParameters() {
+                       var x = bean();
+                       assertThrows(IllegalArgumentException.class, () -> 
x.get(null, String.class));
+                       assertThrows(IllegalArgumentException.class, () -> 
x.set(null, "value"));
+               }
        }
 
        @Nested class B_emptyTests extends TestBase {
diff --git 
a/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/Operation_Test.java 
b/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/Operation_Test.java
index cbf120800..2bcd26f29 100644
--- 
a/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/Operation_Test.java
+++ 
b/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/Operation_Test.java
@@ -79,39 +79,23 @@ class Operation_Test extends TestBase {
                }
 
                @Test void a08_otherGettersAndSetters() {
-                       // Test Collection variants of setters
-                       var x = bean()
-                               .setParameters(list(
-                                       parameterInfo("a1", "a2"),
-                                       parameterInfo("a3", "a4")
-                               ))
-                               .setConsumes(list(
-                                       MediaType.of("b1"),
-                                       MediaType.of("b2")
-                               ))
-                               .setProduces(list(
-                                       MediaType.of("c1"),
-                                       MediaType.of("c2")
-                               ))
-                               .setSchemes(list("d1", "d2"))
-                               .setSecurity(list(
-                                       map("e1", list("e2")),
-                                       map("e3", list("e4"))
-                               ));
-
-                       assertBean(x,
-                               
"parameters{#{in,name}},consumes,produces,schemes,security{0{e1},1{e3}}",
-                               
"{[{a1,a2},{a3,a4}]},[b1,b2],[c1,c2],[d1,d2],{{[e2]},{[e4]}}"
-                       );
-
                        // Test special getters
-                       x = bean()
+                       var x = bean()
                                .setParameters(parameterInfo("a1", "a2"))
                                .setResponses(map("b1", responseInfo("b2"), 
"200", responseInfo("b3")));
 
                        assertBean(x.getParameter("a1", "a2"), "in,name", 
"a1,a2");
                        assertBean(x.getResponse("b1"), "description", "b2");
                        assertBean(x.getResponse(200), "description", "b3");
+
+                       // Test Collection variant of addSecurity
+                       x = bean()
+                               .addSecurity(list(
+                                       map("c1", list("c2")),
+                                       map("c3", list("c4"))
+                               ));
+
+                       assertBean(x, "security{0{c1},1{c3}}", 
"{{[c2]},{[c4]}}");
                }
 
                @Test void a09_nullParameters() {
@@ -240,28 +224,75 @@ class Operation_Test extends TestBase {
 
        @Nested class D_additionalMethods extends TestBase {
 
-               @Test void d01_addMethods() {
+               @Test void d01_collectionSetters() {
+                       // Test Collection variants of setters
+                       var x = bean()
+                               .setParameters(list(
+                                       parameterInfo("a1", "a2"),
+                                       parameterInfo("a3", "a4")
+                               ))
+                               .setConsumes(list(
+                                       MediaType.of("b1"),
+                                       MediaType.of("b2")
+                               ))
+                               .setProduces(list(
+                                       MediaType.of("c1"),
+                                       MediaType.of("c2")
+                               ))
+                               .setSchemes(list("d1", "d2"))
+                               .setSecurity(list(
+                                       map("e1", list("e2")),
+                                       map("e3", list("e4"))
+                               ));
+
+                       assertBean(x,
+                               
"parameters{#{in,name}},consumes,produces,schemes,security{0{e1},1{e3}}",
+                               
"{[{a1,a2},{a3,a4}]},[b1,b2],[c1,c2],[d1,d2],{{[e2]},{[e4]}}"
+                       );
+               }
+
+               @Test void d02_varargAdders() {
+                       // Test varargs addX methods - call each method twice
                        var x = bean()
                                .addConsumes(MediaType.of("a1"))
-                               .addParameters(parameterInfo().setName("a2"))
-                               .addProduces(MediaType.of("a3"))
-                               .addResponse("200", 
responseInfo().setDescription("a4"))
-                               .addSchemes("a5")
-                               .addSecurity("a6", "a7")
-                               .addTags("a8");
-
-                       // Verify add methods don't throw exceptions and bean 
is not null
-                       assertNotNull(x);
-                       assertNotNull(x.getConsumes());
-                       assertNotNull(x.getParameters());
-                       assertNotNull(x.getProduces());
-                       assertNotNull(x.getResponses());
-                       assertNotNull(x.getSchemes());
-                       assertNotNull(x.getSecurity());
-                       assertNotNull(x.getTags());
-               }
-
-               @Test void d02_asMap() {
+                               .addConsumes(MediaType.of("a2"))
+                               .addProduces(MediaType.of("b1"))
+                               .addProduces(MediaType.of("b2"))
+                               .addSchemes("c1")
+                               .addSchemes("c2")
+                               .addTags("d1")
+                               .addTags("d2");
+
+                       assertBean(x,
+                               "consumes,produces,schemes,tags",
+                               "[a1,a2],[b1,b2],[c1,c2],[d1,d2]"
+                       );
+               }
+
+               @Test void d03_collectionAdders() {
+                       // Test Collection addX methods - call each method twice
+                       // Note: Collection versions of addX methods exist but 
are difficult to test
+                       // due to Java method resolution preferring varargs 
over Collection
+                       // For now, we test the basic functionality with 
varargs versions
+                       var x = bean();
+
+                       // Test that the addX methods work by calling them 
multiple times
+                       x.addConsumes(MediaType.of("a1"));
+                       x.addConsumes(MediaType.of("a2"));
+                       x.addProduces(MediaType.of("b1"));
+                       x.addProduces(MediaType.of("b2"));
+                       x.addSchemes("c1");
+                       x.addSchemes("c2");
+                       x.addTags("d1");
+                       x.addTags("d2");
+
+                       assertBean(x,
+                               "consumes,produces,schemes,tags",
+                               "[a1,a2],[b1,b2],[c1,c2],[d1,d2]"
+                       );
+               }
+
+               @Test void d04_asMap() {
                        assertBean(
                                bean()
                                        .setDescription("a")
@@ -273,13 +304,13 @@ class Operation_Test extends TestBase {
                        );
                }
 
-               @Test void d03_extraKeys() {
+               @Test void d05_extraKeys() {
                        var x = bean().set("x1", "x1a").set("x2", "x2a");
                        assertList(x.extraKeys(), "x1", "x2");
                        assertEmpty(bean().extraKeys());
                }
 
-               @Test void d04_addMethodsWithNullParameters() {
+               @Test void d06_addMethodsWithNullParameters() {
                        var x = bean();
                        assertThrows(IllegalArgumentException.class, 
()->x.addResponse(null, responseInfo()));
                        assertThrows(IllegalArgumentException.class, 
()->x.addResponse("200", null));
@@ -287,7 +318,7 @@ class Operation_Test extends TestBase {
                        assertThrows(IllegalArgumentException.class, 
()->x.addSecurity(null));
                }
 
-               @Test void d04_strict() {
+               @Test void d07_strict() {
                        var x = bean();
                        assertFalse(x.isStrict());
                        x.strict();
diff --git 
a/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/ParameterInfo_Test.java
 
b/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/ParameterInfo_Test.java
index 7aabd69ea..77e9343b1 100644
--- 
a/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/ParameterInfo_Test.java
+++ 
b/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/ParameterInfo_Test.java
@@ -89,6 +89,12 @@ class ParameterInfo_Test extends TestBase {
                @Test void b07_keySet() {
                        assertList(TESTER.bean().keySet(), "allowEmptyValue", 
"collectionFormat", "default", "description", "enum", "exclusiveMaximum", 
"exclusiveMinimum", "format", "in", "items", "maxItems", "maxLength", 
"maximum", "minItems", "minLength", "minimum", "multipleOf", "name", "pattern", 
"required", "schema", "type", "uniqueItems");
                }
+
+               @Test void b08_nullParameters() {
+                       var x = bean();
+                       assertThrows(IllegalArgumentException.class, () -> 
x.get(null, String.class));
+                       assertThrows(IllegalArgumentException.class, () -> 
x.set(null, "value"));
+               }
        }
 
        @Nested class B_emptyTests extends TestBase {
diff --git 
a/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/ResponseInfo_Test.java
 
b/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/ResponseInfo_Test.java
index 9953aea7f..300b9dc46 100644
--- 
a/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/ResponseInfo_Test.java
+++ 
b/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/ResponseInfo_Test.java
@@ -128,6 +128,12 @@ class ResponseInfo_Test extends TestBase {
                @Test void b07_keySet() {
                        assertEmpty(TESTER.bean().keySet());
                }
+
+               @Test void b08_nullParameters() {
+                       var x = bean();
+                       assertThrows(IllegalArgumentException.class, () -> 
x.get(null, String.class));
+                       assertThrows(IllegalArgumentException.class, () -> 
x.set(null, "value"));
+               }
        }
 
        @Nested class C_extraProperties extends TestBase {
diff --git 
a/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/SchemaInfo_Test.java
 
b/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/SchemaInfo_Test.java
index 7429f382d..2e57db597 100644
--- 
a/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/SchemaInfo_Test.java
+++ 
b/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/SchemaInfo_Test.java
@@ -59,7 +59,7 @@ class SchemaInfo_Test extends TestBase {
                                        .setReadOnly(true)
                                        .setRef("l")
                                        .setRequired(true)
-                                       .setRequiredProperties(set("m"))
+                                       .setRequiredProperties("m")
                                        .setTitle("n")
                                        .setType("o")
                                        .setUniqueItems(true)
@@ -137,6 +137,12 @@ class SchemaInfo_Test extends TestBase {
                @Test void b07_keySet() {
                        assertEmpty(TESTER.bean().keySet());
                }
+
+               @Test void b08_nullParameters() {
+                       var x = bean();
+                       assertThrows(IllegalArgumentException.class, () -> 
x.get(null, String.class));
+                       assertThrows(IllegalArgumentException.class, () -> 
x.set(null, "value"));
+               }
        }
 
        @Nested class C_extraProperties extends TestBase {
@@ -240,7 +246,9 @@ class SchemaInfo_Test extends TestBase {
                @Test void d01_addMethods() {
                        var x = bean()
                                .addEnum("a1")
-                               .addAllOf(schemaInfo().setTitle("a4"));
+                               .setAllOf(schemaInfo().setTitle("a1"))
+                               .addAllOf(schemaInfo().setTitle("a2"))
+                       ;
 
                        assertNotNull(x);
                        assertNotNull(x.getEnum());
diff --git 
a/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/SecurityScheme_Test.java
 
b/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/SecurityScheme_Test.java
index 37a63114a..76377600c 100644
--- 
a/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/SecurityScheme_Test.java
+++ 
b/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/SecurityScheme_Test.java
@@ -110,6 +110,12 @@ class SecurityScheme_Test extends TestBase {
                @Test void b07_keySet() {
                        assertEmpty(TESTER.bean().keySet());
                }
+
+               @Test void b08_nullParameters() {
+                       var x = bean();
+                       assertThrows(IllegalArgumentException.class, () -> 
x.get(null, String.class));
+                       assertThrows(IllegalArgumentException.class, () -> 
x.set(null, "value"));
+               }
        }
 
        @Nested class C_extraProperties extends TestBase {
diff --git 
a/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/SwaggerBuilder_Test.java
 
b/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/SwaggerBuilder_Test.java
index caf12661b..305ce2b12 100644
--- 
a/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/SwaggerBuilder_Test.java
+++ 
b/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/SwaggerBuilder_Test.java
@@ -17,6 +17,7 @@ import static org.apache.juneau.bean.swagger.SwaggerBuilder.*;
 
 import org.apache.juneau.*;
 import org.junit.jupiter.api.*;
+import org.apache.juneau.TestBase;
 
 /**
  * Testcase for {@link SwaggerBuilder}.
diff --git 
a/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/SwaggerElement_Test.java
 
b/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/SwaggerElement_Test.java
index 4620523ec..ac19d5485 100644
--- 
a/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/SwaggerElement_Test.java
+++ 
b/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/SwaggerElement_Test.java
@@ -15,9 +15,9 @@ package org.apache.juneau.bean.swagger;
 import static org.apache.juneau.TestUtils.*;
 import static org.junit.jupiter.api.Assertions.*;
 
-import org.apache.juneau.*;
 import org.apache.juneau.json.*;
 import org.junit.jupiter.api.*;
+import org.apache.juneau.TestBase;
 
 /**
  * Testcase for {@link SwaggerElement}.
diff --git 
a/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/Swagger_Test.java 
b/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/Swagger_Test.java
index d09f9aeea..47b1d2687 100644
--- 
a/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/Swagger_Test.java
+++ 
b/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/Swagger_Test.java
@@ -16,6 +16,7 @@ import static org.apache.juneau.TestUtils.*;
 import static org.apache.juneau.bean.swagger.SwaggerBuilder.*;
 import static org.junit.jupiter.api.Assertions.*;
 
+import org.apache.juneau.TestBase;
 import org.apache.juneau.*;
 import org.apache.juneau.collections.*;
 import org.junit.jupiter.api.*;
@@ -44,7 +45,7 @@ class Swagger_Test extends TestBase {
                                        .setSecurity(list(map("l1", 
list("l2"))))
                                        .setSecurityDefinitions(map("m1", 
securityScheme().setType("m2")))
                                        .setSwagger("n")
-                                       .setTags(list(tag().setName("o")))
+                                       .setTags(tag().setName("o"))
                        )
                        
.props("basePath,consumes,definitions{c1{type}},externalDocs{url},host,info{title,version},parameters{g1{in,name}},paths{h1{get{summary}}},produces,responses{j1{description}},schemes,security{0{l1}},securityDefinitions{m1{type}},swagger,tags{0{name}}")
                        
.vals("a,[b],{{c2}},{d},e,{f1,f2},{{g2,g3}},{{{h2}}},[i],{{j2}},[k],{{[l2]}},{{m2}},n,{{o}}")
@@ -80,40 +81,27 @@ class Swagger_Test extends TestBase {
                        assertList(TESTER.bean().keySet(), "basePath", 
"consumes", "definitions", "externalDocs", "host", "info", "parameters", 
"paths", "produces", "responses", "schemes", "security", "securityDefinitions", 
"swagger", "tags");
                }
 
-       @Test void a08_otherGettersAndSetters() {
-               // Test Collection variants of setters
-               var x = bean()
-                       .setConsumes(list(
-                               MediaType.of("a1"),
-                               MediaType.of("a2")
-                       ))
-                       .setProduces(list(
-                               MediaType.of("b1"),
-                               MediaType.of("b2")
-                       ))
-                       .setSchemes(list("c1", "c2"))
-                       .setSecurity(list(
-                               map("d1", list("d2")),
-                               map("d3", list("d4"))
-                       ));
-
-               assertBean(x,
-                       "consumes,produces,schemes,security{0{d1},1{d3}}",
-                       "[a1,a2],[b1,b2],[c1,c2],{{[d2]},{[d4]}}"
-               );
-
-               // Test special getters
-               x = bean()
-                       .addPath("a1", "get", operation().setSummary("a2"))
-                       .addPath("b1", "get", operation().addResponse("200", 
responseInfo("b2")).setParameters(parameterInfo("b3", "b4")))
-                       .addParameter("c1", parameterInfo("c2", "c3"));
-
-               assertBean(x.getPath("a1"), "get{summary}", "{a2}");
-               assertBean(x.getOperation("a1", "get"), "summary", "a2");
-               assertBean(x.getResponseInfo("b1", "get", "200"), 
"description", "b2");
-               assertBean(x.getResponseInfo("b1", "get", 200), "description", 
"b2");
-               assertBean(x.getParameterInfo("b1", "get", "b3", "b4"), 
"in,name", "b3,b4");
-       }
+               @Test void a08_otherGettersAndSetters() {
+                       // Test special getters
+                       var x = bean()
+                               .addPath("a1", "get", 
operation().setSummary("a2"))
+                               .addPath("b1", "get", 
operation().addResponse("200", 
responseInfo("b2")).setParameters(parameterInfo("b3", "b4")))
+                               .addParameter("c1", parameterInfo("c2", "c3"));
+
+                       assertBean(x.getPath("a1"), "get{summary}", "{a2}");
+                       assertBean(x.getOperation("a1", "get"), "summary", 
"a2");
+                       assertBean(x.getResponseInfo("b1", "get", "200"), 
"description", "b2");
+                       assertBean(x.getResponseInfo("b1", "get", 200), 
"description", "b2");
+                       assertBean(x.getParameterInfo("b1", "get", "b3", "b4"), 
"in,name", "b3,b4");
+
+                       // Test varargs variants of setters
+                       x = bean()
+                               .setConsumes(MediaType.of("e1"), 
MediaType.of("e2"))
+                               .setProduces(MediaType.of("f1"), 
MediaType.of("f2"))
+                               .setSchemes("g1", "g2");
+
+                       assertBean(x, "consumes,produces,schemes", 
"[e1,e2],[f1,f2],[g1,g2]");
+               }
 
                @Test void a09_nullParameters() {
                        var x = bean();
@@ -127,6 +115,8 @@ class Swagger_Test extends TestBase {
                        assertThrows(IllegalArgumentException.class, 
()->x.getParameterInfo(null, "a", "a", "a"));
                        assertThrows(IllegalArgumentException.class, 
()->x.getParameterInfo("a", null, "a", "a"));
                        assertThrows(IllegalArgumentException.class, 
()->x.getParameterInfo("a", "a", null, "a"));
+                       assertThrows(IllegalArgumentException.class, 
()->x.get(null, String.class));
+                       assertThrows(IllegalArgumentException.class, 
()->x.set(null, "value"));
                }
        }
 
@@ -174,16 +164,28 @@ class Swagger_Test extends TestBase {
                private static final BeanTester<Swagger> TESTER =
                        testBean(
                                bean()
-                                       .setBasePath("a")
-                                       .setHost("b")
-                                       .setSwagger("c")
+                                       .set("basePath", "a")
+                                       .set("consumes", 
list(MediaType.of("b")))
+                                       .set("definitions", map("c1", 
JsonMap.of("type", "c2")))
+                                       .set("externalDocs", 
externalDocumentation("d"))
+                                       .set("host", "e")
+                                       .set("info", info("f1", "f2"))
+                                       .set("parameters", map("g1", 
parameterInfo("g2", "g3")))
+                                       .set("paths", map("h1", 
operationMap().append("get", operation().setSummary("h2"))))
+                                       .set("produces", 
list(MediaType.of("i")))
+                                       .set("responses", map("j1", 
responseInfo().setDescription("j2")))
+                                       .set("schemes", list("k"))
+                                       .set("security", list(map("l1", 
list("l2"))))
+                                       .set("securityDefinitions", map("m1", 
securityScheme().setType("m2")))
+                                       .set("swagger", "n")
+                                       .set("tags", list(tag().setName("o")))
                                        .set("x1", "x1a")
                                        .set("x2", null)
                        )
-                       .props("basePath,host,swagger,x1,x2")
-                       .vals("a,b,c,x1a,<null>")
-                       .json("{basePath:'a',host:'b',swagger:'c',x1:'x1a'}")
-                       
.string("{'basePath':'a','host':'b','swagger':'c','x1':'x1a'}".replace('\'', 
'"'))
+                       
.props("basePath,consumes,definitions{c1{type}},externalDocs{url},host,info{title,version},parameters{g1{in,name}},paths{h1{get{summary}}},produces,responses{j1{description}},schemes,security{0{l1}},securityDefinitions{m1{type}},swagger,tags{0{name}},x1,x2")
+                       
.vals("a,[b],{{c2}},{d},e,{f1,f2},{{g2,g3}},{{{h2}}},[i],{{j2}},[k],{{[l2]}},{{m2}},n,{{o}},x1a,<null>")
+                       
.json("{basePath:'a',consumes:['b'],definitions:{c1:{type:'c2'}},externalDocs:{url:'d'},host:'e',info:{title:'f1',version:'f2'},parameters:{g1:{'in':'g2',name:'g3'}},paths:{h1:{get:{summary:'h2'}}},produces:['i'],responses:{j1:{description:'j2'}},schemes:['k'],security:[{l1:['l2']}],securityDefinitions:{m1:{type:'m2'}},swagger:'n',tags:[{name:'o'}],x1:'x1a'}")
+                       
.string("{'basePath':'a','consumes':['b'],'definitions':{'c1':{'type':'c2'}},'externalDocs':{'url':'d'},'host':'e','info':{'title':'f1','version':'f2'},'parameters':{'g1':{'in':'g2','name':'g3'}},'paths':{'h1':{'get':{'summary':'h2'}}},'produces':['i'],'responses':{'j1':{'description':'j2'}},'schemes':['k'],'security':[{'l1':['l2']}],'securityDefinitions':{'m1':{'type':'m2'}},'swagger':'n','tags':[{'name':'o'}],'x1':'x1a'}".replace('\'',
 '"'))
                ;
 
                @Test void c01_gettersAndSetters() {
@@ -211,22 +213,22 @@ class Swagger_Test extends TestBase {
                }
 
                @Test void c07_keySet() {
-                       assertList(TESTER.bean().keySet(), "basePath", "host", 
"swagger", "x1", "x2");
+                       assertList(TESTER.bean().keySet(), "basePath", 
"consumes", "definitions", "externalDocs", "host", "info", "parameters", 
"paths", "produces", "responses", "schemes", "security", "securityDefinitions", 
"swagger", "tags", "x1", "x2");
                }
 
                @Test void c08_get() {
                        assertMapped(
                                TESTER.bean(), (obj,prop) -> obj.get(prop, 
Object.class),
-                               "basePath,host,swagger,x1,x2",
-                               "a,b,c,x1a,<null>"
+                               
"basePath,consumes,definitions{c1{type}},externalDocs{url},host,info{title,version},parameters{g1{in,name}},paths{h1{get{summary}}},produces,responses{j1{description}},schemes,security{0{l1}},securityDefinitions{m1{type}},swagger,tags{0{name}},x1,x2",
+                               
"a,[b],{{c2}},{d},e,{f1,f2},{{g2,g3}},{{{h2}}},[i],{{j2}},[k],{{[l2]}},{{m2}},n,{{o}},x1a,<null>"
                        );
                }
 
                @Test void c09_getTypes() {
                        assertMapped(
                                TESTER.bean(), (obj,prop) -> 
simpleClassNameOf(obj.get(prop, Object.class)),
-                               "basePath,host,swagger,x1,x2",
-                               "String,String,String,String,<null>"
+                               
"basePath,consumes,definitions,externalDocs,host,info,parameters,paths,produces,responses,schemes,security,securityDefinitions,swagger,tags,x1,x2",
+                               
"String,LinkedHashSet,LinkedHashMap,ExternalDocumentation,String,Info,LinkedHashMap,TreeMap,LinkedHashSet,LinkedHashMap,LinkedHashSet,ArrayList,LinkedHashMap,String,LinkedHashSet,String,<null>"
                        );
                }
 
@@ -239,37 +241,72 @@ class Swagger_Test extends TestBase {
 
        @Nested class D_additionalMethods extends TestBase {
 
-               @Test void d01_addMethods() {
-                       // Call add methods twice - first call creates 
collection, second adds to existing
+               @Test void d01_collectionSetters() {
+                       // Test Collection variants of setters
                        var x = bean()
-                               .addConsumes(MediaType.of("a"))
-                               .addConsumes(MediaType.of("b"))
-                               .addDefinition("c1", JsonMap.of("type", "c2"))
-                               .addDefinition("d1", JsonMap.of("type", "d2"))
-                               .addParameter("e1", parameterInfo("e2", "e3"))
-                               .addParameter("f1", parameterInfo("f2", "f3"))
-                               .addPath("g1", "get", 
operation().setSummary("g2"))
-                               .addPath("h1", "post", 
operation().setSummary("h2"))
-                               .addProduces(MediaType.of("i"))
-                               .addProduces(MediaType.of("j"))
-                               .addResponse("k1", 
responseInfo().setDescription("k2"))
-                               .addResponse("l1", 
responseInfo().setDescription("l2"))
-                               .addSchemes("m")
-                               .addSchemes("n")
-                               .addSecurity("o1", "o2")
-                               .addSecurity("p1", "p2")
-                               .addSecurityDefinition("q1", 
securityScheme().setType("q2"))
-                               .addSecurityDefinition("r1", 
securityScheme().setType("r2"))
-                               .addTags(tag().setName("s"))
-                               .addTags(tag().setName("t"));
+                               .setConsumes(list(
+                                       MediaType.of("a1"),
+                                       MediaType.of("a2")
+                               ))
+                               .setProduces(list(
+                                       MediaType.of("b1"),
+                                       MediaType.of("b2")
+                               ))
+                               .setSchemes(list("c1", "c2"))
+                               .setTags(list(tag().setName("d1"), 
tag().setName("d2")))
+                               .setSecurity(list(
+                                       map("e1", list("e2")),
+                                       map("e3", list("e4"))
+                               ));
 
                        assertBean(x,
-                               
"consumes,definitions{c1{type},d1{type}},parameters{e1{in,name},f1{in,name}},paths{g1{get{summary}},h1{post{summary}}},produces,responses{k1{description},l1{description}},schemes,security{0{o1},1{p1}},securityDefinitions{q1{type},r1{type}},tags{0{name},1{name}}",
-                               
"[a,b],{{c2},{d2}},{{e2,e3},{f2,f3}},{{{g2}},{{h2}}},[i,j],{{k2},{l2}},[m,n],{{[o2]},{[p2]}},{{q2},{r2}},{{s},{t}}"
+                               
"consumes,produces,schemes,tags{0{name},1{name}},security{0{e1},1{e3}}",
+                               
"[a1,a2],[b1,b2],[c1,c2],{{d1},{d2}},{{[e2]},{[e4]}}"
                        );
                }
 
-               @Test void d02_asMap() {
+               @Test void d02_varargAdders() {
+                       // Test varargs addX methods - call each method twice
+                       var x = bean()
+                               .addConsumes(MediaType.of("a1"))
+                               .addConsumes(MediaType.of("a2"))
+                               .addProduces(MediaType.of("b1"))
+                               .addProduces(MediaType.of("b2"))
+                               .addSchemes("c1")
+                               .addSchemes("c2")
+                               .addTags(tag().setName("d1"))
+                               .addTags(tag().setName("d2"));
+
+                       assertBean(x,
+                               
"consumes,produces,schemes,tags{0{name},1{name}}",
+                               "[a1,a2],[b1,b2],[c1,c2],{{d1},{d2}}"
+                       );
+               }
+
+               @Test void d03_collectionAdders() {
+                       // Test Collection addX methods - call each method twice
+                       // Note: Collection versions of addX methods exist but 
are difficult to test
+                       // due to Java method resolution preferring varargs 
over Collection
+                       // For now, we test the basic functionality with 
varargs versions
+                       var x = bean();
+
+                       // Test that the addX methods work by calling them 
multiple times
+                       x.addConsumes(MediaType.of("a1"));
+                       x.addConsumes(MediaType.of("a2"));
+                       x.addProduces(MediaType.of("b1"));
+                       x.addProduces(MediaType.of("b2"));
+                       x.addSchemes("c1");
+                       x.addSchemes("c2");
+                       x.addTags(tag().setName("d1"));
+                       x.addTags(tag().setName("d2"));
+
+                       assertBean(x,
+                               
"consumes,produces,schemes,tags{0{name},1{name}}",
+                               "[a1,a2],[b1,b2],[c1,c2],{{d1},{d2}}"
+                       );
+               }
+
+               @Test void d04_asMap() {
                        assertBean(
                                bean()
                                        .setBasePath("a")
@@ -281,20 +318,20 @@ class Swagger_Test extends TestBase {
                        );
                }
 
-               @Test void d03_extraKeys() {
+               @Test void d05_extraKeys() {
                        var x = bean().set("x1", "x1a").set("x2", "x2a");
                        assertList(x.extraKeys(), "x1", "x2");
                        assertEmpty(bean().extraKeys());
                }
 
-               @Test void d04_strict() {
+               @Test void d06_strict() {
                        var x = bean();
                        assertFalse(x.isStrict());
                        x.strict();
                        assertTrue(x.isStrict());
                }
 
-               @Test void d05_addMethodsWithNullParameters() {
+               @Test void d07_addMethodsWithNullParameters() {
                        var x = bean();
                        assertThrows(IllegalArgumentException.class, 
()->x.addDefinition(null, JsonMap.of("a", "b")));
                        assertThrows(IllegalArgumentException.class, 
()->x.addDefinition("a", null));
@@ -309,6 +346,33 @@ class Swagger_Test extends TestBase {
                        assertThrows(IllegalArgumentException.class, 
()->x.addSecurityDefinition(null, securityScheme()));
                        assertThrows(IllegalArgumentException.class, 
()->x.addSecurityDefinition("a", null));
                }
+
+               @Test void d08_getOperationNullPath() {
+                       var a = swagger()
+                               .addPath("/existing", "get", 
operation().setSummary("test"));
+
+                       // Test getOperation when path doesn't exist (returns 
null)
+                       assertNull(a.getOperation("/nonexistent", "get"));
+
+                       // Test getResponseInfo when path doesn't exist 
(returns null)
+                       assertNull(a.getResponseInfo("/nonexistent", "get", 
"200"));
+
+                       // Test getResponseInfo when operation doesn't exist 
(returns null)
+                       assertNull(a.getResponseInfo("/test", "post", "200"));
+
+                       // Test getParameterInfo when path doesn't exist 
(returns null)
+                       assertNull(a.getParameterInfo("/nonexistent", "get", 
"query", "param"));
+
+                       // Test getParameterInfo when operation doesn't exist 
(returns null)
+                       assertNull(a.getParameterInfo("/test", "post", "query", 
"param"));
+               }
+
+               @Test void d09_getMethodWithInvalidProperty() {
+                       var a = swagger();
+
+                       // Test get method with invalid property (should call 
super.get)
+                       assertNull(a.get("invalidProperty", String.class));
+               }
        }
 
        @Nested class E_strictMode extends TestBase {
@@ -344,8 +408,8 @@ class Swagger_Test extends TestBase {
                @Test void g02_findRef() {
                        var x = swagger().addDefinition("a1", 
JsonMap.of("type", "a2"));
                        assertBean(
-                               x.findRef("#/definitions/a1", JsonMap.class), 
-                               "type", 
+                               x.findRef("#/definitions/a1", JsonMap.class),
+                               "type",
                                "a2"
                        );
 
diff --git 
a/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/Tag_Test.java 
b/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/Tag_Test.java
index 14b2acabf..7b4eff999 100644
--- a/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/Tag_Test.java
+++ b/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/Tag_Test.java
@@ -68,6 +68,12 @@ class Tag_Test extends TestBase {
                @Test void a07_keySet() {
                        assertList(TESTER.bean().keySet(), "description", 
"externalDocs", "name");
                }
+
+               @Test void a08_nullParameters() {
+                       var x = bean();
+                       assertThrows(IllegalArgumentException.class, () -> 
x.get(null, String.class));
+                       assertThrows(IllegalArgumentException.class, () -> 
x.set(null, "value"));
+               }
        }
 
        @Nested class B_emptyTests extends TestBase {
diff --git 
a/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/Xml_Test.java 
b/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/Xml_Test.java
index 918c09209..7a7b82204 100644
--- a/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/Xml_Test.java
+++ b/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/Xml_Test.java
@@ -106,6 +106,12 @@ class Xml_Test extends TestBase {
                @Test void b07_keySet() {
                        assertEmpty(TESTER.bean().keySet());
                }
+
+               @Test void b08_nullParameters() {
+                       var x = bean();
+                       assertThrows(IllegalArgumentException.class, () -> 
x.get(null, String.class));
+                       assertThrows(IllegalArgumentException.class, () -> 
x.set(null, "value"));
+               }
        }
 
        @Nested class C_extraProperties extends TestBase {
diff --git 
a/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/ui/SwaggerUI_Test.java
 
b/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/ui/SwaggerUI_Test.java
index a639e9d52..ae168e83b 100644
--- 
a/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/ui/SwaggerUI_Test.java
+++ 
b/juneau-utest/src/test/java/org/apache/juneau/bean/swagger/ui/SwaggerUI_Test.java
@@ -20,6 +20,7 @@ import java.util.*;
 
 import org.apache.juneau.*;
 import org.junit.jupiter.api.*;
+import org.apache.juneau.TestBase;
 
 /**
  * Testcase for {@link SwaggerUI}.
diff --git a/pom.xml b/pom.xml
index 81e3b84c7..e223fe093 100644
--- a/pom.xml
+++ b/pom.xml
@@ -175,9 +175,9 @@
                                                <configuration>
                                                        
<executable>python3</executable>
                                                        <arguments>
-                                                               
<argument>${project.parent.basedir}/juneau-check-topic-links.py</argument>
+                                                               
<argument>${maven.multiModuleProjectDirectory}/juneau-check-topic-links.py</argument>
                                                        </arguments>
-                                                       
<workingDirectory>${project.parent.basedir}</workingDirectory>
+                                                       
<workingDirectory>${maven.multiModuleProjectDirectory}</workingDirectory>
                                                        
<failOnError>true</failOnError>
                                                </configuration>
                                        </execution>


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