*  Breaking: Move `gzip` from `RequestBody` to `Request.Builder`. This new API handles both
    compressing the request body and also adding the corresponding `Content-Encoding` header. Note
    that this function is sensitive to when it is called: the response body must be supplied before
    it can be compressed.

 *  Breaking: Remove `AddressPolicy`, `AsyncDns`, and `ConnectionListener` from the public API. We

    private static final Logger logger = LogManager.getLogger(GsaConfigParser.class);

    /** Prefix for regular expression patterns. */
    public static final String REGEXP = "regexp:";

    /** Prefix for case-sensitive regular expression patterns. */
    public static final String REGEXP_CASE = "regexpCase:";

    /** Prefix for case-insensitive regular expression patterns. */