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