postTranslationTexts() {
				return Promise.reject("translation.postTranslationTexts is not implemented");
			}
Interface called to upload an XLIFF file.

@param {object} mPropertyBag - Property bag
@param {sap.ui.fl.Layer} mPropertyBag.layer - Layer
@param {object} mPropertyBag.payload - The file to be uploaded
@returns {Promise} Resolves after the file was uploaded;
rejects if an error occurs or a parameter is missing