Adding two widgets to one title pane

config.js

drawmeasure: {
				include: true,
				id: 'drawandmeasurement',
				widgetType: 'titlePane',
				widgetClass: 'gis/dijit/DrawAndMeasurement',
				title: 'Darw and Measurement',
				open: false,
				position: 4,
				options: {
					map: true,
					mapClickMode: true,
					defaultAreaUnit: units.SQUARE_MILES,
					defaultLengthUnit: units.MILES
				}
			}

DrawAndMeasurement.js

define([
	'dojo/_base/declare',
	'dijit/_WidgetBase',
	'esri/dijit/Measurement',
	'gis/dijit/Draw',
	'dojo/aspect',
	'dojo/_base/lang',
	'dojo/dom-construct',
	'dijit/TitlePane'
], function(declare, _WidgetBase, Measurement, Draw, aspect, lang, domConstruct, TitlePane) {

	return declare([_WidgetBase], {
		declaredClass: 'gis.digit.DrawAndMeasurement',
		postCreate: function() {
			this.inherited(arguments);

			this.mTp = new TitlePane({
				title: 'Measurement',
				open: false
			}).placeAt(this.domNode);
			this.mTp.startup();

			this.measure = new Measurement({
				map: this.map,
				defaultAreaUnit: this.defaultAreaUnit,
				defaultLengthUnit: this.defaultLengthUnit
			}, domConstruct.create('div')).placeAt(this.mTp.containerNode);
			this.measure.startup();

			aspect.before(this.measure, 'measureArea', lang.hitch(this, 'setMapClickMode', 'measure'));
			aspect.before(this.measure, 'measureDistance', lang.hitch(this, 'setMapClickMode', 'measure'));
			aspect.before(this.measure, 'measureLocation', lang.hitch(this, 'setMapClickMode', 'measure'));
			aspect.after(this.measure, 'closeTool', lang.hitch(this, 'setMapClickMode', this.mapClickMode.defaultMode));

			this.dTp = new TitlePane({
				title: 'Draw',
				open: false
			}).placeAt(this.domNode);
			this.dTp.startup();

			// add draw
			this.draw = new Draw({
				map: this.map,
				mapClickMode: this.mapClickMode
			}, domConstruct.create('div')).placeAt(this.dTp.containerNode);
		},
		setMapClickMode: function(mode) {
			this.mapClickMode.current = mode;
		}
	});
});