public function getPlaceHolderText($handle)
    {
        $pageValues = $this->getAvailablePageValues();
        if (in_array($handle, array_keys($pageValues))) {
            $placeHolder = $pageValues[$handle];
        } else {
            $attributeKey = CollectionAttributeKey::getByHandle($handle);
            if (is_object($attributeKey)) {
                $placeHolder = $attributeKey->getAttributeKeyName();
            }
        }

        return "[" . $placeHolder . "]";
    }