foreach ( $groups as $group ) {
				$userGroupManager->addUserToGroup( $this->user, $group );
			}
		}
		// reset rights cache
		$userGroupManager->addUserToGroup( $this->user, "dummy" );
		$userGroupManager->removeUserFromGroup( $this->user, "dummy" );

// Make sure our user is no longer allowed to edit terms.
		$services->getUserGroupManager()->removeUserFromGroup( $user, 'all-permission' );
		$services->getUserGroupManager()->addUserToGroup( $user, 'no-permission' );
		$services->getPermissionManager()->invalidateUsersRightsCache( $user );

foreach ( $add as $group ) {
			$userGroupManager->addUserToGroup( $user, $group );
		}
	}