code: function onCancel() {
  				_Helper.removeByPath(that.mPatchRequests, sFullPath, oPatchPromise);
  				// write the previous value into the cache
  				_Helper.updateExisting(that.mChangeListeners, sEntityPath, oEntity,
  					Cache.makeUpdateData(aPropertyPath, vOldValue));
  			}
docs: /*
  Synchronous callback to cancel the PATCH request so that it is really gone when
  resetChangesForPath has been called on the binding or model.