code: func (c *Client) AppTransferList(lr *ListRange) ([]AppTransfer, error) {
  	req, err := c.NewRequest("GET", "/account/app-transfers", nil, nil)
  	if err != nil {
  		return nil, err
  	}
  
  	if lr != nil {
  		lr.SetHeader(req)
  	}
  
  	var appTransfersRes []AppTransfer
  	return appTransfersRes, c.DoReq(req, &appTransfersRes)
  }
docs: // List existing apps transfers.
  //
  // lr is an optional ListRange that sets the Range options for the paginated
  // list of results.