public function unregisterGroupFromSession(CourseSessionGroup $sessionGroup)
{
$this->om->startFlushSuite();
$session = $sessionGroup->getSession();
$group = $sessionGroup->getGroup();
$groupType = $sessionGroup->getGroupType();
$role = null;
$users = $group->getUsers()->toArray();
if ($groupType === 0) {
$role = $session->getLearnerRole();
} elseif ($groupType === 1) {
$role = $session->getTutorRole();
}
if (!is_null($role)) {
$this->roleManager->dissociateRole($group, $role);
}
$this->om->remove($sessionGroup);
$sessionUsers = $this->getSessionUsersBySessionAndUsers($session, $users, $groupType);
$this->unregisterUsersFromSession($sessionUsers);
$this->om->endFlushSuite();
}
