nnectedCallback` is a normal spot to do so.
       * It is safe to call this method multiple times as it only turns on
       * property accessors once.
       */
      _enableProperties() {
        if (!this.__dataEnabled) {
          this.__dataEnabled = true;
          if (this.__dataInstanceProps) {
            this._initializeInstanceProperties(this.__dataInstanceProps);
            this.__dataInstanceProps = null;
          }
          this.ready()
        }
      }

      /**
       * Calls the `_pro