private void OneSignalOutcomeEventsExamples()
    {
        OneSignal.SendOutcome("normal_1");
        OneSignal.SendOutcome("normal_2", (OSOutcomeEvent outcomeEvent) => {
            printOutcomeEvent(outcomeEvent);
        });

        OneSignal.SendUniqueOutcome("unique_1");
        OneSignal.SendUniqueOutcome("unique_2", (OSOutcomeEvent outcomeEvent) => {
            printOutcomeEvent(outcomeEvent);
        });

        OneSignal.SendOutcomeWithValue("value_1", 3.2f);
        OneSignal.SendOutcomeWithValue("value_2", 3.2f, (OSOutcomeEvent outcomeEvent) => {
            printOutcomeEvent(outcomeEvent);
        });
    }