code: function () {
  			var oModel = this._oDialog.getModel("view"),
  				sSelectedLocation = oModel.getProperty("/SelectedLocation"),
  				oControl;
  
  			if (sSelectedLocation === "custom") {
  				oControl = this._getControl("customBootstrapURL",this._SUPPORT_ASSISTANT_POPOVER_ID);
  				var sValue = oControl.getValue();
  				try {
  					this._validateValue(sValue);
  				} catch (oException) {
  					this._showError(oControl, oException.message);
  					if (this._sErrorMessage) {
  						this._sErrorMessage = null;
  					}
  					return;
  				}
  			} else {
  				oControl = this._getControl("standardBootstrapURL", this._SUPPORT_ASSISTANT_POPOVER_ID);
  			}
  
  			if (this._sErrorMessage) {
  				this._showError(oControl, this._sErrorMessage);
  				this._sErrorMessage = null;
  			}
  		}
docs: Handler for onAfterOpen event from popover
  @private