code: function (oManifest) {
  			var sUri = "";
  			if (oManifest){
  				var oSapApp = (oManifest.getEntry) ? oManifest.getEntry("sap.app") : oManifest["sap.app"];
  				if (oSapApp && oSapApp.dataSources && oSapApp.dataSources.mainService && oSapApp.dataSources.mainService.uri){
  					sUri = oSapApp.dataSources.mainService.uri;
  				}
  			} else {
  				this.log.warning("No Manifest received.");
  			}
  			return sUri;
  		}
docs: Returns the uri of the main service specified in the app manifest
  
  @param {object} oManifest - Manifest of the component
  @returns {string} Returns the uri if the manifest is available, otherwise an empty string
  @public