def METHOD_NAME(cls):
    testConfig = """
    {
        "_schema_name" : "test-schema",
        "_schema_version" : 1.0,
        "string_setting" : "This is a sentence.",
        "int_setting" : 42,
        "auto_int_setting" : "7*6",
        "another_auto_int_setting" : 43,
        "bool_setting" : true,
        "formatted_setting" : "Greetings, {user_name} from {user_home_town}!",
        "array_setting" : [1,2,3,4],
        "array_from_string_setting" : "[1, 1*2, 1*3, 1*4]",
        "roi_setting" : [[1,2,3,4,5], [6,7,8,9,10]],
        "subconfig" :   {
                            "_schema_name" : "sub-schema",
                            "_schema_version" : 1.0,
                            "sub_settingA" : "yes",
                            "sub_settingB" : "no"
                        }
    }
    """
    cls.tempDir = tempfile.mkdtemp()
    cls.configpath = os.path.join(cls.tempDir, "config.json")
    logger.debug("Using config file: " + cls.configpath)
    with open(cls.configpath, "w") as f:
        f.write(testConfig)