code: def _submit_part(session, url, part, timeout):
      
      try:
          response = session.put(url, data=part, timeout=timeout)
          return response.headers.get('etag').strip('"')
      except Exception as e:
          raise SbgError(
              'Failed to submit the part. Reason: {}'.format(
                  six.text_type(e)
              )
          )
docs: Used by the worker to submit the part data to the storage service URL.
      :param session: Storage service session.
      :param url: Part url.
      :param part: Part data in bytes.
      :param timeout: Timeout for storage session.
      :return: ETag for the submitted part.