Download File with Micronaut

Question

My Client should receive a File from the Controller. The problem is that the Client is only receiving a string. How can I get the returned stream from the Controller?

This is my Controller:

@Get("/{databaseName}")
MutableHttpResponse < Object > createDatabaseBackup(String databaseName) {
    InputStream inputStreamDatabaseBackup = backupTask.exportBackup(databaseName);
    return HttpResponse.ok(new StreamedFile(inputStreamDatabaseBackup, MediaType.APPLICATION_OCTET_STREAM_TYPE));
}

Here is my Client:

@Inject
@Client("${agent.connection-url}")
private RxHttpClient client;

public String getBackup(String dataBaseName) {
    return client.toBlocking().retrieve(HttpRequest.GET("/backup/" + dataBaseName));
}