private function getBindingTypeStates(Args $args)
    {
        $states = array();

        if ($args->isOptionSet('enabled')) {
            $states[] = BindingTypeState::ENABLED;
        }

        if ($args->isOptionSet('duplicate')) {
            $states[] = BindingTypeState::DUPLICATE;
        }

        return $states ?: BindingTypeState::all();
    }