code: def languages(self, **kwargs):
          
          path = '/projects/%s/languages' % self.get_id()
          return self.manager.gitlab.http_get(path, **kwargs)
docs: Get languages used in the project with percentage value.
  
          Args:
              **kwargs: Extra options to send to the server (e.g. sudo)
  
          Raises:
              GitlabAuthenticationError: If authentication is not correct
              GitlabGetError: If the server failed to perform the request