code: public BoxRequestsFile.CreateNewVersionUploadSession getCreateUploadVersionSessionRequest(File file, String fileId)
              throws FileNotFoundException {
          return new BoxRequestsFile.CreateNewVersionUploadSession(file, getUploadSessionForNewFileVersionUrl(fileId), mSession);
      }
docs: Gets a request that creates an upload session for uploading a new file version
  
  @param  file The file to be uploaded
  @param fileId The fileId
  @return request to create an upload session for uploading a new file version