#import NS_ASSUME_NONNULL_BEGIN @class ImplClassWithResilientStoredProperty; @interface ImplClass : NSObject - (instancetype)init; @property (assign) NSInteger implProperty; @property (assign) NSInteger defaultIntProperty; + (void)runTests; + (ImplClassWithResilientStoredProperty *)makeResilientImpl; - (void)testSelf; - (void)printSelfWithLabel:(int)label; - (nonnull NSString *)someMethod; @end @interface ImplClassWithResilientStoredProperty : NSObject - (void)printSelfWithLabel:(int)label; - (void)mutate; @end extern void implFunc(int param); NS_ASSUME_NONNULL_END