code: def diff(self, **kwargs):
          
          path = '%s/%s/diff' % (self.manager.path, self.get_id())
          return self.manager.gitlab.http_get(path, **kwargs)
docs: Generate the commit diff.
  
          Args:
              **kwargs: Extra options to send to the server (e.g. sudo)
  
          Raises:
              GitlabAuthenticationError: If authentication is not correct
              GitlabGetError: If the diff could not be retrieved
  
          Returns:
              list: The changes done in this commit