= opt_textContent;
    }
  },

  /**
   * If |selection| is a function, call it and return the result.
   * Otherwise return |selection| directly.
   *
   * @return {*}
   */
  getCurrentSelection_() {
    // Gets the current selection, invoking the selection function if needed.
    if (typeof this.selection_ === 'function') {
      return this.selection_();
    }
    return this.selection_;
  },

  setHighlight_(opt_eventSet) {
    if (this.controller_) {
      this.controller_.changeAnalysisLinkHoveredEve