* StringUtils.isAsciiPrintable("Ceki G\u00fclc\u00fc") = false
     * </pre>
     *
     * @param cs the CharSequence to check, may be null
     * @return {@code true} if every character is in the range 32 thru 126
     */
    public static boolean isAsciiPrintable(final CharSequence cs) {
        if (cs == null) {
            return false;
        }
        final int sz = cs.length();

         * the 'received' member of the response object will not
         * be set to true indicating the send and sendTransaction
         * methods that the next part should be sent. This is a
         * very indirect and simple batching control mechanism.
         */

        if ( this.andx == null || !getConfig().isUseBatching() || this.batchLevel >= getBatchLimit(getConfig(), (byte) this.andx.getCommand()) ) {

                          type: string
                          example: "Docs » Open Source Enterprise Search Server: Fess Commercial Support Open Source Enterprise Search Server: Fess What is Fess ? Fess is very powerful and easily deployable Enterprise Search Server. ..."
                        host:
                          type: string
                          format: hostname

            log.trace("Have DC referral " + dr);
        }

        if ( dr != null && domain.equals(dr.getServer()) && root.equals(dr.getShare()) ) {
            // If we do cache these we never get to the properly cached
            // standalone referral we might have.
            log.warn("Dropping self-referential referral " + dr);
            dr = null;
        }
        return dr;
    }