/**
* Add field to select
*
* @param string|array $field
* @param string|null $alias
* @return void
*/
public function addField($field, $alias = null)
{
if (isset($this->addFieldStrategies[$field])) {
$this->addFieldStrategies[$field]->addField($this->getCollection(), $field, $alias);
} else {
parent::addField($field, $alias);
}
}
