Presigned.Get_objecttype options = {expires_in : Ptime.Span.t option;URL lifetime. AWS S3 accepts at most seven days for SigV4 query authentication.
*)response_content_type : Content_type.t option;Optional response-content-type query override.
response_content_disposition : Header_value.t option;Optional response-content-disposition query override.
version_id : Object.Version_id.t option;Object version to presign.
*)source_encryption : Encryption.Source.t option;Optional SSE-C source-object key 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.
*)}Presigned GET Object options.
val default_options : optionsDefault presigned GET Object options.