text: /**
   * HTTP Cloud Function.
   *
   * @param {Object} req Cloud Function request context.
   * @param {Object} res Cloud Function response context.
   */
  exports.helloGET = (req, res) => {
    let minVer = process.env.MIN_VER;
    let maxVer = process.env.MAX_VER;
    let hostName = process.env.HOST_NAME;
    res.status(200).send("Function version:" + maxVer + "." + minVer);
  };
  