src/third_party/llvm-project/clang/test/Modules/Inputs/FooFramework.framework/PrivateHeaders/Foo.h

__attribute__((objc_root_class))
@interface NSObject
+ (instancetype) alloc;
- (instancetype) init;
- (instancetype)retain;
- (void)release;
@end

@interface Foo : NSObject
@end