kaldesai commented on code in PR #541:
URL:
https://github.com/apache/incubator-kie-kogito-docs/pull/541#discussion_r1496887822
##########
serverlessworkflow/modules/ROOT/pages/core/custom-functions-support.adoc:
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@@ -531,7 +531,91 @@ kogito.sw.functions.greet.timeout=5000 <1>
----
<1> Time in milliseconds
-== Custom function types
+== Rest Custom Function
+
+Serverless Workflow Specification defines the
xref:service-orchestration/orchestration-of-openapi-based-services.adoc[OpenAPI
function type], which is the preferred way to interact with existing REST
servers.
+However, sometimes a workflow shoud interact with several REST APIs which are
not described using an OpenAPI specification file. Since generating such file
for these services might be a tedious exercise, {product_name} offers REST
custom type as a shorcut.
+
+When using custom rest, in the function definition you specify the HTTP URI to
be invoked and the HTTP method (get, post, patch or put) to be used, using
`operation` string. When the function is actually invoked you pass the request
arguments as you do when using an OpenAPI function.
Review Comment:
```suggestion
When using custom rest, in the function definition, you specify the HTTP URI
to be invoked and the HTTP method (get, post, patch, or put) to be used, using
the `operation` string. When the function is invoked, you pass the request
arguments as you do when using an OpenAPI function.
```
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