Presigned.Delete_objecttype options = {expires_in : Ptime.Span.t option;URL lifetime. AWS S3 accepts at most seven days for SigV4 query authentication.
*)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.
*)}Presigned DELETE Object options.
val default_options : optionsDefault presigned DELETE Object options.