13 @interface MyClass;  interface
18 …- (void) someMethod: (MyClass*)In __attribute__((annotate("objc_no_direct_instance_variable_assign…
19   - (void) someMethodNotAnnaotated: (MyClass*)In;  argument
24   MyClass *_Z;
26   MyClass* _NotA __attribute__((annotate("objc_allow_direct_instance_variable_assignment")));
29 …@property (assign, nonatomic) MyClass* A; // explicitely synthesized, not implemented, non-default…
31   @property (assign) MyClass* X;  // automatically synthesized, not implemented
33   @property (assign, nonatomic) MyClass* Y; // automatically synthesized, implemented
35   @property (assign, nonatomic) MyClass* Z; // non-synthesized ivar, implemented setter
38   @property (assign) MyClass* NotA;  // warnings should be suppressed, backing ivar is annotated
39 …@property (assign) MyClass* NotX __attribute__((annotate("objc_allow_direct_instance_variable_assi…
46   - (void) someMethod: (MyClass*)In {  argument
55   - (void) someMethodNotAnnaotated: (MyClass*)In {  argument