code: def get_milestones(self, state=github.GithubObject.NotSet, sort=github.GithubObject.NotSet, direction=github.GithubObject.NotSet):
          
          assert state is github.GithubObject.NotSet or isinstance(state, (str, unicode)), state
          assert sort is github.GithubObject.NotSet or isinstance(sort, (str, unicode)), sort
          assert direction is github.GithubObject.NotSet or isinstance(direction, (str, unicode)), direction
          url_parameters = dict()
          if state is not github.GithubObject.NotSet:
              url_parameters["state"] = state
          if sort is not github.GithubObject.NotSet:
              url_parameters["sort"] = sort
          if direction is not github.GithubObject.NotSet:
              url_parameters["direction"] = direction
          return github.PaginatedList.PaginatedList(
              github.Milestone.Milestone,
              self._requester,
              self.url + "/milestones",
              url_parameters
          )
docs: :calls: `GET /repos/:owner/:repo/milestones <http://developer.github.com/v3/issues/milestones>`_
          :param state: string
          :param sort: string
          :param direction: string
          :rtype: :class:`github.PaginatedList.PaginatedList` of :class:`github.Milestone.Milestone`