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