public function getAvailable(): array
    {
        $result = [];

        $dbLanguages = $this->find('list', ['keyField' => 'code', 'valueField' => 'name'])
                            ->where(['trashed IS' => null])
                            ->toArray();
        $supportedLanguages = $this->getSupported();
        $result = array_diff_assoc($supportedLanguages, $dbLanguages);

        return $result;
    }