getObject(<request>, AsyncResponseTransformer.toFile(file, config)) results in java.nio.file.NoSuchFileException despite FileWriteOption.CREATE_NEW

[fgeck]

Hello,

I am using following code to download an object from S3 into a file.
(When doing exactly the same request with the non async client I do not run into any issues):

val tmp = System.getProperty("java.io.tmpdir")
val filePath =  Path.of("$tmp/${UUID.randomUUID()}.tmp")
val config =
            FileTransformerConfiguration
                .builder()
                .fileWriteOption(FileTransformerConfiguration.FileWriteOption.CREATE_NEW)
                .build()
        s3Client.getObject(
            buildGetObjectRequest(bucket, key),
            AsyncResponseTransformer.toFile(filePath, config),
        )

private fun buildGetObjectRequest(
        bucket: String,
        key: String,
    ): GetObjectRequest =
        GetObjectRequest
            .builder()
            .bucket(bucket)
            .key(key)
            .build()

Once executed I run into:

"java.nio.file.NoSuchFileException: /tmp/324381b9-9087-47e8-bdda-b6c791ad59b2.tmp
\tat sun.nio.fs.UnixException.translateToIOException(UnixException.java:92)
\tat sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:106)
\tat sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:111)
\tat sun.nio.fs.UnixFileSystemProvider.newByteChannel(UnixFileSystemProvider.java:218)
\tat java.nio.file.Files.newByteChannel(Files.java:380)
\tat java.nio.file.Files.newByteChannel(Files.java:432)
\tat java.nio.file.Files.readAllBytes(Files.java:3288)
\tat java.nio.file.Files.readString(Files.java:3366)
\tat java.nio.file.Files.readString(Files.java:3325)

My question is am I doing something wrong here? Given the FileWriteOption.CREATE_NEW I would expect that the file is created when I pass a Path to the AsyncResponseTransformer.

Side note: I am experimenting with File vs. Path and the FileWriteOptions because when running multiple getObject().join() asynchronously using Coroutines I run into java.nio.file.FileAlreadyExistsException: /tmp/cdbc1300-c412-4d34-bdb8-5cf19e8471ea.tmp despite using UUIDs.