REST Runtime API DownloadReport, where is this downloaded to? The local Controllers FileSystem? If so, where on teh local file system? Fianlly, is there any methodology on the REST API to retrieve the results via REST such that the remote client can actually peruse the results?
The report will be in the HTTP response as binary with content-type application/octet-stream. If you use the Java client of the Results API, you will have a saveReport method that take a destinationFolder parameter and save the Report on a local file.
