{
  "scheme": "${bound:s3-bucket:scheme}",
  "at": "${bound:s3-bucket:at}",
  "port": "${bound:s3-bucket:port}",
  "bucket": "${bound:s3-bucket:bucket}",
  "region": "${bound:s3-bucket:region}",
  "key": "${bound:s3-bucket:as}",
  "secret": "${secret:s3-bucket}"
}