lib/MultiIniModifier.php
public function save($chmod = null)
    {
        if ($this->master instanceof IniModifierInterface) {
            $this->master->save($chmod);
        }
        $this->overrider->save($chmod);
    }
public function save($chmod = null)
    {
        if ($this->master instanceof IniModifierInterface) {
            $this->master->save($chmod);
        }
        $this->overrider->save($chmod);
    }
save the ini files.