public static Build withPropertyValue(String propertyValue) {
    return new Builder(propertyValue);
  }
@Test
  void it_should_return_unknown_when_property_value_does_not_exist() {
    //GIVEN
    String unknownValue = "an_unknown_value";
    //WHEN
    ElasticsearchClientType esClientType =
        ElasticsearchClientTypeBuilder.withPropertyValue(unknownValue).build();
    //THEN
    assertEquals(UNKNOWN, esClientType);
  }