@Override
    public InputStream fetch(String fetchKey, Metadata metadata, ParseContext parseContext) throws TikaException, IOException {
        return fetch(fetchKey, -1, -1, metadata);
    }
Fetches files from s3. Example file: s3://my_bucket/path/to/my_file.pdf
The bucket must be specified via the tika-config or before
initialization, and the fetch key is "path/to/my_file.pdf".
tika-pipes/tika-fetchers/tika-fetcher-s3/src/main/java/org/apache/tika/pipes/fetcher/s3/S3Fetcher.java