/**
  * Adds a user to this organization
  *
  * @param User $user User object of user to add to this organization
  * @return Workflow $workflow
  */
 public function addMember(User $user)
 {
     $workflow = $this->organization->workflows->create('add_organization_user_membership', array('params' => array('user_id' => $user->get('id'), 'role' => 'team_member')));
     return $workflow;
 }