Call operator for objc.ObjCBlock<objc.CGPoint Function(ffi.Pointer<ffi.Void>)>.
objc.ObjCBlock<objc.CGPoint Function(ffi.Pointer<ffi.Void>)>
Available on ObjCBlock<CGPoint Function(Pointer<Void>)>, provided by the ObjCBlock_NSPoint_ffiVoid_CallExtension extension