onNamedDestinationReceived(pageNumber) {
    const outstandingRequest = this.outstandingRequests_.shift();
    if (pageNumber != -1)
      outstandingRequest.params.page = pageNumber;
    outstandingRequest.callback(outstandingRequest.params);
  }
/**
   * This is called when a named destination is received and the page number
   * corresponding to the request for which a named destination is passed.
   *
   * @param {number} pageNumber The page corresponding to the named destination
   *    requested.
   */
This is called when a named destination is received and the page number
corresponding to the request for which a named destination is passed.

@param {number} pageNumber The page corresponding to the named destination
requested.
This is called when a named destination is received and the page number corresponding to the request for which a named destination is passed . @param { number } pageNumber The page corresponding to the named destination requested .
onNamedDestinationReceived(pageNumber) {
    const outstandingRequest = this.outstandingRequests_.shift();
    if (pageNumber != -1)
      outstandingRequest.params.page = pageNumber;
    outstandingRequest.callback(outstandingRequest.params);
  }
onNamedDestinationReceived ( pageNumber ) { const outstandingRequest = this . outstandingRequests_ . shift ( ) ; if ( pageNumber != - 1 ) outstandingRequest . params . page = pageNumber ; outstandingRequest . callback ( outstandingRequest . params ) ; }
This is called when a named destination is received and the page number
 corresponding to the request for which a named destination is passed.
This is called when a named destination is received and the page number corresponding to the request for which a named destination is passed .