code: public BinaryUploadRequest setFileToUpload(String path) throws FileNotFoundException {
          params.files.clear();
          params.files.add(new UploadFile(path));
          return this;
      }
docs: Sets the file used as raw body of the upload request.
  
  @param path path to the file that you want to upload
  @throws FileNotFoundException if the file to upload does not exist
  @return {@link BinaryUploadRequest}