headers_for_direct_upload

# File activestorage/lib/active_storage/service/gcs_service.rb, line 95
    def headers_for_direct_upload(key, checksum,, filename: nil, disposition: nil, **)
      content_disposition = content_disposition_with(type: disposition, filename: filename) if filename

      { "Content-MD5" => checksum, "Content-Disposition" => content_disposition }
    end