src/Filter/Setting/Collection.php
public function getReferencedAttributes()
    {
        $arrAttributes = array();

        foreach ($this->arrSettings as $objSetting) {
            $arrAttributes = array_merge($arrAttributes, $objSetting->getReferencedAttributes());
        }

        return $arrAttributes;
    }
public function getReferencedAttributes()
    {
        $arrAttributes = array();

        foreach ($this->arrSettings as $objSetting) {
            $arrAttributes = array_merge($arrAttributes, $objSetting->getReferencedAttributes());
        }

        return $arrAttributes;
    }
{@inheritdoc}