hasPreviewPageRangeChanged_() {
      return this.pageRanges_ == null ||
          !areRangesEqual(
                 this.printTicketStore_.pageRange.getPageRanges(),
                 this.pageRanges_);
    }
/**
     * @return {boolean} Whether the page range in the print ticket has changed.
     * @private
     */
@return {boolean} Whether the page range in the print ticket has changed.
@private
@return { boolean } Whether the page range in the print ticket has changed . @private
hasPreviewPageRangeChanged_() {
      return this.pageRanges_ == null ||
          !areRangesEqual(
                 this.printTicketStore_.pageRange.getPageRanges(),
                 this.pageRanges_);
    }
hasPreviewPageRangeChanged_ ( ) { return this . pageRanges_ == null || ! areRangesEqual ( this . printTicketStore_ . pageRange . getPageRanges ( ) , this . pageRanges_ ) ; }
@return {boolean} Whether the page range in the print ticket has changed.
@return { boolean } Whether the page range in the print ticket has changed .