code: function setViewState(id, value, context, doNotSave) {
  
          PreferencesImpl.stateManager.set(id, value, context);
  
          if (!doNotSave) {
              PreferencesImpl.stateManager.save();
          }
      }
docs: Convenience function that sets a view state and then saves the file
  
  @param {string} id preference to set
  @param {*} value new value for the preference
  @param {?Object} context Optional additional information about the request
  @param {boolean=} doNotSave If it is undefined or false, then save the
  view state immediately.