code: function doPost(path, data, callback) {
    var options = {
      host: GLOBAL.config.ESEARCH.server.host,
      port: GLOBAL.config.ESEARCH.server.port,
      path: GLOBAL.config.ESEARCH._index + path,
      method: 'POST',
      headers: {
        'Content-Type': 'application/x-www-form-urlencoded',
        'Content-Length': Buffer.byteLength(data)
      }
    };
    utils.doPostJson(options, data, callback);
  }
docs: POST for es functions that aren't locally supported