public static void event_with_object_payload()
{
test.ITesting obj = new test.Testing();
test.ITesting received_obj = null;
obj.EvtWithObjEvt += (object sender, EvtWithObjEvt_Args e) => {
received_obj = e.arg;
};
test.ITesting sent_obj = new test.Testing();
obj.EmitEventWithObj(sent_obj);
Test.AssertEquals(sent_obj, received_obj);
}