/**
* Create a criteria for a especific model
*
* @param string $alias
* @return \Engine\Mvc\Model\Query\Builder
*/
public function queryBuilder($alias = null)
{
$params = [];
$builder = new Builder($params);
$builder->setModel($this, $alias);
if (static::$_conditions !== null) {
$builder->where($this->normalizeConditions(static::$_conditions));
}
return $builder;
}