def METHOD_NAME(self):
    """Test ServiceDefinition.clean_keys_of_slashes() function."""
    service = ServiceDefinition()
    test_data = {
        "hh/group/data_set": "22",
        "empty_column": "",
        "false_column": False,
        "zero_column": 0,
    }
    expected_data = {
        "hh_group_data_set": "22",
        "false_column": "False",
        "zero_column": "0",
    }
    self.assertEqual(expected_data, service.clean_keys_of_slashes(test_data))