code: function () {
  			if (this._oView) {
  				this._oView.destroy();
  				this._oView = null;
  			}
  
  			if (this._oModel) {
  				this._oModel.destroy();
  				this._oModel = null;
  			}
  
  			if (UIComponent.prototype.destroy) {
  				UIComponent.prototype.destroy.call(this);
  			}
  		}
docs: destroy the view and model before exiting