init() {
			Dialog.prototype.init.apply(this);

			// initialize dialog and create member variables.
			this.setTitle(oResources.getText("CREATE_APP_VARIANT_DIALOG_TITLE"));
			this.setContentWidth("860px");
			this.setContentHeight("250px");

			oCustomTileModel = new JSONModel({
				title: null,
				subtitle: null,
				icon: " ", // icon is a blank string because otherwise it would read undefined in ariaLabel
				iconname: null
			});

			oSelectDialogModel = new JSONModel({
				icons: null
			});

			this.setModel(oCustomTileModel);

			_createTile();
			_createTileAttributes();

			this.addContent(_createContentList());

			// create, and cancel buttons.
			this._createButtons();
			this.addStyleClass(RtaUtils.getRtaStyleClassName());
		}
This event will be fired when the user clicks the Cancel button on the dialog.