/**
* Add a user group to this collection.
*
* @param GroupInterface $group The user group to add
*
* @return GroupCollection Returns $this for chainability
*
* @throws \InvalidArgumentException If a group with the same name has
* already been set on this collection
*/
public function add(GroupInterface $group)
{
if (isset($this->_groups[$group->getName()])) {
throw new \InvalidArgumentException(sprintf('User group `%s` is already defined', $group->getName()));
}
$this->_groups[$group->getName()] = $group;
return $this;
}
public function add(GroupInterface $group)
{
$this->groups[$group->getName()] = $group;
}
