@Target({METHOD,FIELD,ANNOTATION_TYPE,CONSTRUCTOR,PARAMETER,TYPE_USE})
@Retention(RUNTIME)
@Repeatable(Null.List.class)
@Documented
@Constraint(validatedBy={})
public @interface Null
The annotated element must be 
null.
 Accepts any type.- 
Nested Class Summary
Nested Classes - 
Optional Element Summary
Optional Elements