Download a file from the Dropbox account into an output stream.

The getFile method will just write the file contents to whatever OutputStream you supply, which doesn't necessarily need to be a FileOutputStream like the example in the documentation shows. That being the case, you supply a different kind of OutputStream to send the data to wherever you want. For example, a PipedOutputStream may make sense, depending on your scenario.

Alternatively, you may want to use startGetFile which returns a DbxClient.Downloader instead, which has an InputStream with the file's contents as the body field, which may suit your use case better.