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Whether the Groovy code should be subject to Java annotation processing.
Annotation processing of Groovy code works by having annotation processors visit the Java stubs generated by the Groovy compiler in order to support joint compilation of Groovy and Java source.
When set to true, stubs will be unconditionally generated for all Groovy sources, and Java annotations processors will be executed on those stubs.
When this option is set to false (the default), Groovy code will not be subject to annotation processing, but any joint compiled Java code will be. If the compiler argument "-proc:none" was specified as part of the Java compile options, the value of this flag will be ignored. No annotation processing will be performed regardless, on Java or Groovy source.