17 @interface MyClass;  interface
22 …- (void) someMethod: (MyClass*)In __attribute__((annotate("objc_no_direct_instance_variable_assign…
23   - (void) someMethodNotAnnaotated: (MyClass*)In;  argument
28   MyClass *_Z;
30   MyClass* _NotA __attribute__((annotate("objc_allow_direct_instance_variable_assignment")));
33 …@property (assign, nonatomic) MyClass* A; // explicitly synthesized, not implemented, non-default …
35   @property (assign) MyClass* X;  // automatically synthesized, not implemented
37   @property (assign, nonatomic) MyClass* Y; // automatically synthesized, implemented
39   @property (assign, nonatomic) MyClass* Z; // non-synthesized ivar, implemented setter
42   @property (assign) MyClass* NotA;  // warnings should be suppressed, backing ivar is annotated
43 …@property (assign) MyClass* NotX __attribute__((annotate("objc_allow_direct_instance_variable_assi…
50   - (void) someMethod: (MyClass*)In {  argument
59   - (void) someMethodNotAnnaotated: (MyClass*)In {  argument