public function removeRoleAssignmentById($roleAssignmentId)
{
$query = $this->handler->createDeleteQuery();
$query->deleteFrom($this->handler->quoteTable('ezuser_role'))->where($query->expr->eq($this->handler->quoteColumn('id'), $query->bindValue($roleAssignmentId, null, \PDO::PARAM_INT)));
$query->prepare()->execute();
}