tPreparer(ctx)  if err != nil {   return result, autorest.NewErrorWithError(err, "frontdoor.ExperimentsClient", "listByProfileNextResults", nil, "Failure preparing next results request")  }  if req == nil {   return  }  resp, err := client.ListByProfileSender(req)  if err != nil {   result.Response = autorest.Response{Response: resp}   return result, autorest.NewErrorWithError(err, "frontdoor.ExperimentsClient", "listByProfileNextResults", resp, "Failure sending next results request")  }  result, err = client.ListByProfileResponder(resp)  if err != nil {   err = autorest.NewErrorWithError(err, "frontdoor.ExperimentsClient", "listByProfileNextResults", resp, "Failure responding to next results request")  }  return }  // ListBy