String getServiceLabelValue() {
        return serviceLabelValue;
    }
@Test
    public void emptyProperties() {
        // given
        Map<String, Comparable> properties = createProperties();
        properties.put(SERVICE_LABEL_NAME.key(), "  ");
        String serviceLabelValue = "service-label-value";
        properties.put(SERVICE_LABEL_VALUE.key(), serviceLabelValue);
        properties.put(SERVICE_DNS.key(), "");

        //when
        KubernetesConfig config = new KubernetesConfig(properties);

        //then
        assertEquals(serviceLabelValue, config.getServiceLabelValue());
    }