@Test
public void testGetEntityFieldOptional() {

	Optional<EntityField> entityFieldOptional =
		_sortParserImpl.getEntityFieldOptional(
			_entityModel.getEntityFieldsMap(), "fieldExternal");
	Assert.assertTrue(entityFieldOptional.isPresent());
	EntityField entityField = entityFieldOptional.get();
	Assert.assertEquals("fieldExternal", entityField.getName());
}