static get sharedInstance() {
    if (PageManager.__private__ === undefined) PageManager.__private__ = {};
    if (PageManager.__private__.sharedInstance === undefined) PageManager.__private__.sharedInstance = new PageManager();
    return PageManager.__private__.sharedInstance;
  }
/**
   * The shared singleton PageManager instance.
   *
   * @type {PageManager}
   */
The shared singleton PageManager instance.
The shared singleton PageManager instance .
static get sharedInstance() {
    if (PageManager.__private__ === undefined) PageManager.__private__ = {};
    if (PageManager.__private__.sharedInstance === undefined) PageManager.__private__.sharedInstance = new PageManager();
    return PageManager.__private__.sharedInstance;
  }
static get sharedInstance ( ) { if ( PageManager . __private__ === undefined ) PageManager . __private__ = { } ; if ( PageManager . __private__ . sharedInstance === undefined ) PageManager . __private__ . sharedInstance = new PageManager ( ) ; return PageManager . __private__ . sharedInstance ; }
The shared singleton PageManager instance.
The shared singleton PageManager instance .