whole_func_string: function() {
      var multi = this._client.multi();
      multi.execAsync = Promise.promisify(multi.exec);
      return multi;
    }
func_code_string: function() {
      var multi = this._client.multi();
      multi.execAsync = Promise.promisify(multi.exec);
      return multi;
    }
func_documentation_string: Get a redis multi interface
  @returns {Object} Redis multi interface