/**
* Add user spec
*
* @param FreeBusyUserSpec $user
* @return self
*/
public function addFreebusyUser(FreeBusyUserSpec $user)
{
$this->_freebusyUsers->add($user);
return $this;
}
/**
* Add usr
*
* @param FreeBusyUserSpec $usr
* @return self
*/
public function addUsr(FreeBusyUserSpec $usr)
{
$this->_usr->add($usr);
return $this;
}