loadFlexData(mPropertyBag) {
			return this.getFileList(mPropertyBag.reference)
			.then(function(aFileList) {
				return Promise.all(
					aFileList.map(function(sUrl) {
						return LoaderExtensions.loadResource({
							dataType: "json",
							url: sUrl,
							async: true
						});
					})
				).then(function(aFlexObjects) {
					var mGroupedFlexObjects = StorageUtils.getGroupedFlexObjects(aFlexObjects);
					return StorageUtils.filterAndSortResponses(mGroupedFlexObjects);
				});
			});
		}
Loads a list of files and returns them in a format understood by <code>sap.ui.fl</code>.

@param {object} mPropertyBag - Properties needed by the connectors
@param {string} mPropertyBag.reference - Reference of the application
@returns {Promise<Object>} Promise resolving with an object containing flex data