If the annotation 
@Documented is present on the declaration
 of an annotation interface A, then any @A annotation on
 an element is considered part of the element's public contract.
 In more detail, when an annotation interface A is annotated with
 Documented, the presence and value of A annotations
 are a part of the public contract of the elements A
 annotates.
 Conversely, if an annotation interface B is not
 annotated with Documented, the presence and value of
 B annotations are not part of the public contract
 of the elements B annotates.
 Concretely, if an annotation interface is annotated with Documented,
 by default a tool like javadoc will display annotations of that interface
 in its output while annotations of annotation interfaces without
 Documented will not be displayed.- Since:
- 1.5