test/SILGen/Inputs/keypaths_objc.h - third_party/swift - Git at Google

 @import Foundation;

 @interface ObjCFoo

 @property(readonly) NSString *_Nonnull objcProp;

 @end
	@import Foundation;

	@interface ObjCFoo

	@property(readonly) NSString *_Nonnull objcProp;

	@end