public function deleteUser($userId)
{
$query = $this->handler->createDeleteQuery();
$query->deleteFrom($this->handler->quoteTable('ezuser_setting'))->where($query->expr->eq($this->handler->quoteColumn('user_id'), $query->bindValue($userId, null, \PDO::PARAM_INT)));
$query->prepare()->execute();
$query = $this->handler->createDeleteQuery();
$query->deleteFrom($this->handler->quoteTable('ezuser'))->where($query->expr->eq($this->handler->quoteColumn('contentobject_id'), $query->bindValue($userId, null, \PDO::PARAM_INT)));
$query->prepare()->execute();
}