5 lines · c
1@interface A(ExplicitNullabilityProperties)2@property (nonatomic, readwrite, retain, nonnull) A *explicitNonnullInstance;3@property (nonatomic, readwrite, retain, nullable) A *explicitNullableInstance;4@end5 1@interface A(ExplicitNullabilityProperties)2@property (nonatomic, readwrite, retain, nonnull) A *explicitNonnullInstance;3@property (nonatomic, readwrite, retain, nullable) A *explicitNullableInstance;4@end5