docs: private void cleanupDestination(DownloadRequest request, boolean forceClean) {
          if (!request.isResumable() || forceClean) {
              Log.d("cleanupDestination() deleting " + request.getDestinationURI().getPath());
              File destinationFile = new File(request.getDestinationURI().getPath());
              if (destinationFile.exists()) {
                  destinationFile.delete();
              }
          }
      }