public function getAllWithDefaultValue($bOnlySelectable = false)
    {
        $aAvailable = $this->getAll($bOnlySelectable);
        $aOut       = [];

        foreach ($aAvailable as $oType) {
            $sClassName = $oType->slug;
            if ($sClassName::SUPPORTS_DEFAULTS) {
                $aOut[] = $oType;
            }
        }

        return $aOut;
    }