/** The key of the configuration. e.g. url_link */
    String RESPONSE_FIELD_url_link = "response.field.url_link";

    /** The key of the configuration. e.g. site_path */
    String RESPONSE_FIELD_site_path = "response.field.site_path";

    /** The key of the configuration. e.g. 50 */
    String RESPONSE_MAX_TITLE_LENGTH = "response.max.title.length";

    /** The key of the configuration. e.g. 100 */