public function current()
    {
        if ($this->valid()) {
            $key = $this->baseArrayMap[$this->iteratorIterationPosition];
            $value = $this->baseConcreteData[$key];
            return $this->internalFilterHooks($key, $value, 'output') ?
                $this->internalSanitizeHooks($key, $value, 'output') : null;
        }
    }