loadVariantsAuthors() {
			return Promise.reject("loadVariantsAuthors is not implemented");
		}
Get the names of variants' authors.

@param {object} mPropertyBag - Property bag
@param {string} mPropertyBag.reference - Flexibility reference
@param {string} [mPropertyBag.url] - Configured URL for the connector
@returns {Promise<object>} Resolves with a map between variant IDs and their authors' names containing the data for the flex features