OCA\Richdocuments\Storage::searchDocuments PHP Method

    protected static function searchDocuments()
    {
        $documents = array();
        foreach (self::getSupportedMimetypes() as $mime) {
            $rawDocuments = \OCP\Files::searchByMime($mime);
            $documents = array_merge($documents, self::processDocuments($rawDocuments));
        }
        return $documents;
    }