extensions/amp-story/1.0/amp-story.js
/**
   * Builds the system layer DOM.  This is dependent on the pages_ array having
   * been initialized, so it cannot happen at build time.
   * @private
   */
Builds the system layer DOM.  This is dependent on the pages_ array having
been initialized, so it cannot happen at build time.
@private
Builds the system layer DOM . This is dependent on the pages_ array having been initialized so it cannot happen at build time . @private
buildSystemLayer_() {
    this.updateAudioIcon_();
    const pageIds = this.pages_.map(page => page.element.id);
    this.element.appendChild(this.systemLayer_.build(pageIds));
  }
buildSystemLayer_ ( ) { this . updateAudioIcon_ ( ) ; const pageIds = this . pages_ . map ( page => page . element . id ) ; this . element . appendChild ( this . systemLayer_ . build ( pageIds ) ) ; }
Builds the system layer DOM.
Builds the system layer DOM .