code: func (r Brand) GetToken(userId *int) (resp string, err error) {
  	params := []interface{}{
  		userId,
  	}
  	err = r.Session.DoRequest("SoftLayer_Brand", "getToken", params, &r.Options, &resp)
  	return
  }
docs: // (DEPRECATED) Use [[SoftLayer_User_Customer::getImpersonationToken]] method.