public function unlink($groupId, $contentTypeId, $status)
{
$groupCount = $this->contentTypeGateway->countGroupsForType($contentTypeId, $status);
if ($groupCount < 2) {
throw new Exception\RemoveLastGroupFromType($contentTypeId, $status);
}
$this->contentTypeGateway->deleteGroupAssignment($groupId, $contentTypeId, $status);
// @todo FIXME: What is to be returned?
return true;
}