@Retention(value=RUNTIME) @Target(value={TYPE_USE,TYPE_PARAMETER}) @SubtypeOf(value=MustCallUnknown.class) @DefaultQualifierInHierarchy @DefaultFor(value=EXCEPTION_PARAMETER) public @interface MustCall
@MustCall({"m1", "m2"}) may be obligated to call m1()
 and/or m2() before it is deallocated, but it is not obligated to call any other methods.
 This annotation is enforced by the Object Construction Checker's -AcheckMustCall mode.
 It enforces that the methods m1() and m2() are called on the annotated expression
 before it is deallocated.
 
The subtyping relationship is:
 @MustCall({"m1"}) <: @MustCall({"m1", "m2"})public abstract String[] value