src/Struct/fixes/DataEntity.php
protected function _normalizeKey($key)
    {
        if (!is_string($key) && !is_numeric($key))
            $key = md5(Std\flatten($key));

        return $key;
    }
protected function _normalizeKey($key)
    {
        if (!is_string($key) && !is_numeric($key))
            $key = md5(Std\flatten($key));

        return $key;
    }
protected function _normalizeKey ( $ key ) { if ( ! is_string ( $ key ) && ! is_numeric ( $ key ) ) $ key = md5 ( Std \ flatten ( $ key ) ) ; return $ key ; }
Make hash string for none scalars
@param string|mixed $key
@return string
Make hash string for none scalars