Method whenBuilt

src/custom-element.js:495–497

* Returns the promise that's resolved when the element has been built. If * the build fails, the resulting promise is rejected. * @return {!Promise}

()

     * @return {!Promise}
     */
    whenBuilt() {
      return this.signals_.whenSignal(CommonSignals_Enum.BUILT);
    }

    /**
     * Requests or requires the element to be built. The build is done by