public async Task <IActionResult> GetIndexes(SubsonicRequest request, long?ifModifiedSince = null) { var authResult = await AuthenticateUser(request).ConfigureAwait(false); if (authResult != null) { return(authResult); } var result = await SubsonicService.GetIndexes(request, SubsonicUser, ifModifiedSince).ConfigureAwait(false); return(BuildResponse(request, result, "indexes")); }