fnLoadMockData = function(sUrl, oEntitySet) {
					var oResponse = syncAjax({
						url: sUrl,
						dataType: "json"
					});
					if (oResponse.success) {
						if (oResponse.data.d) {
							if (oResponse.data.d.results) {
								mData[oEntitySet.name] = oResponse.data.d.results;
							} else {
								Log.error("The mock data format for entity set \"" + oEntitySet.name + "\" invalid");
							}
						} else {
							if (Array.isArray(oResponse.data)) {
								mData[oEntitySet.name] = oResponse.data;
							} else {
								Log.error("The mock data for entity set \"" + oEntitySet.name + "\" could not be loaded due to wrong format!");
								return false;
							}
						}
						return true;
					} else {
						if (oResponse.status === "parsererror") {
							Log.error("The mock data for entity set \"" + oEntitySet.name + "\" could not be loaded due to a parsing error!");
						}
						return false;
					}
				}
loads the mock data for the given entity sets and tries
to load them from the files inside the given base url.
The name of the JSON files containing the mock data
should be either the name of the entity set or the name
of the underlying entity type. As an alternative you
could also specify the url to a single JSON file
containing the mock data for all entity types.

@param {map}
               mEntitySets map of entity sets
@param {string}
               sBaseUrl the base url which contains the
               mock data in JSON files or if the url is
               pointing to a JSON file containing all
               entity types
@return {array} the mockdata arary containing the data
        for the entity sets
@private