public static boolean areValidChoices(@NonNull String choices) {
        String strippedChoices = choices.trim();
        return strippedChoices != null && !strippedChoices.isEmpty() && strippedChoices.split(CHOICES_DELIMITER).length > 0;
    }
@Test
    public void shouldValidateChoices() {
        assertFalse(ChoiceParameterDefinition.areValidChoices(""));
        assertFalse(ChoiceParameterDefinition.areValidChoices("        "));
        assertTrue(ChoiceParameterDefinition.areValidChoices("abc"));
        assertTrue(ChoiceParameterDefinition.areValidChoices("abc\ndef"));
        assertTrue(ChoiceParameterDefinition.areValidChoices("abc\r\ndef"));
    }