@Documented @Target({FIELD,METHOD,PARAMETER,LOCAL_VARIABLE}) @Retention(CLASS) public @interface NullUnknown
null
under certain
defined circumstances. The necessity of the non-null check depends
on situations described in the javadoc (so the non-null check is
not required by default).
Consider Map.get(java.lang.Object)
as an example of
such a method - depending on usage of the Map
null
may be legal or forbidden.
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