code: def upload_content(self, synchronous=True, **kwargs):
          
          kwargs = kwargs.copy()  # shadow the passed-in kwargs
          kwargs.update(self._server_config.get_client_kwargs())
          response = client.post(self.path('upload_content'), **kwargs)
          json = _handle_response(response, self._server_config, synchronous)
          if json['status'] != 'success':
              raise APIResponseError(
                  # pylint:disable=no-member
                  'Received error when uploading file {0} to repository {1}: {2}'
                  .format(kwargs.get('files'), self.id, json)
              )
          return json
docs: Upload a file or files to the current repository.
  
          Here is an example of how to upload content::
  
              with open('my_content.rpm') as content:
                  repo.upload_content(files={'content': content})
  
          This method accepts the same keyword arguments as Requests. As a
          result, the following examples can be adapted for use here:
  
          * `POST a Multipart-Encoded File`_
          * `POST Multiple Multipart-Encoded Files`_
  
          :param synchronous: What should happen if the server returns an HTTP
              202 (accepted) status code? Wait for the task to complete if
              ``True``. Immediately return the server's response otherwise.
          :param kwargs: Arguments to pass to requests.
          :returns: The server's response, with all JSON decoded.
          :raises: ``requests.exceptions.HTTPError`` If the server responds with
              an HTTP 4XX or 5XX message.
          :raises nailgun.entities.APIResponseError: If the response has a status
              other than "success".
  
          .. _POST a Multipart-Encoded File:
              http://docs.python-requests.org/en/latest/user/quickstart/#post-a-multipart-encoded-file
          .. _POST Multiple Multipart-Encoded Files:
              http://docs.python-requests.org/en/latest/user/advanced/#post-multiple-multipart-encoded-files