sruehl commented on code in PR #1088:
URL: https://github.com/apache/plc4x/pull/1088#discussion_r1311253205
##########
plc4j/spi/src/main/java/org/apache/plc4x/java/spi/values/PlcNull.java:
##########
@@ -271,6 +271,21 @@ public PlcValue getValue(String key) {
return null;
}
+ @Override
+ public Map<String, PlcValue> getMetaData() {
+ return null;
Review Comment:
Maybe provide a `collections.emptyMap()` (or however this is called, might
be a static variable too) just to avoid NPEs when calling it
##########
plc4j/spi/src/main/java/org/apache/plc4x/java/spi/values/PlcNull.java:
##########
@@ -271,6 +271,21 @@ public PlcValue getValue(String key) {
return null;
}
+ @Override
+ public Map<String, PlcValue> getMetaData() {
+ return null;
Review Comment:
or if it extends PLC Value adapter remove those implementations here
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