protected function processExistingLemmas($family, array $old_lemmas = [], array $new_lemmas = [])
    {
        // Get existing lemmas
        $lemmas = array_intersect_key($old_lemmas, $new_lemmas);

        if (count($lemmas) > 0) {
            // Sort lemmas by key
            ksort($lemmas);

            if ($this->option('verbose')) {
                $this->line("            " . count($lemmas) . " already translated strings");
            }

            foreach ($lemmas as $key => $value) {
                Arr::set(
                    $this->final_lemmas, $key, $value
                );
            }

            return true;
        }

        return false;
    }