def METHOD_NAME() -> str:
    """Returns the contents of core/tests/wdio.conf.js file.
    Returns:
        str. The contents of wdio.conf.js, as a string.
    """
    webdriverio_config_file_content = utils.open_file(
        WEBDRIVERIO_CONF_FILE_PATH, 'r').read()
    return webdriverio_config_file_content