Presigned.Put_objecttype options = {expires_in : Ptime.Span.t option;URL lifetime. AWS S3 accepts at most seven days for SigV4 query authentication.
*)content_type : Content_type.t option;Optional Content-Type header to sign. The uploader must send the same value.
checksum : Object.Checksum.value option;Optional checksum header to sign.
*)encryption : Encryption.Destination.t option;Optional encryption headers to sign.
*)expected_bucket_owner : Account_id.t option;x-amz-expected-bucket-owner header to sign.
extra_signed_headers : (string * string) list;Additional headers to include in the signature. Callers must send them with the eventual request.
*)}Presigned PUT Object options.
val default_options : optionsDefault presigned PUT Object options.