docs: def get_notifications(self, all=github.GithubObject.NotSet, participating=github.GithubObject.NotSet, since=github.GithubObject.NotSet, before=github.GithubObject.NotSet):
          """
          :calls: `GET /notifications <http://developer.github.com/v3/activity/notifications>`_
          :param all: bool
          :param participating: bool
          :param since: datetime.datetime
          :param before: datetime.datetime
          :rtype: :class:`github.PaginatedList.PaginatedList` of :class:`github.Notification.Notification`
          """
  
          assert all is github.GithubObject.NotSet or isinstance(all, bool), all
          assert participating is github.GithubObject.NotSet or isinstance(participating, bool), participating
          assert since is github.GithubObject.NotSet or isinstance(since, datetime.datetime), since
          assert before is github.GithubObject.NotSet or isinstance(before, datetime.datetime), before
  
          params = dict()
          if all is not github.GithubObject.NotSet:
              params["all"] = all
          if participating is not github.GithubObject.NotSet:
              params["participating"] = participating
          if since is not github.GithubObject.NotSet:
              params["since"] = since.strftime("%Y-%m-%dT%H:%M:%SZ")
          if before is not github.GithubObject.NotSet:
              params["before"] = before.strftime("%Y-%m-%dT%H:%M:%SZ")
  
          return github.PaginatedList.PaginatedList(
              github.Notification.Notification,
              self._requester,
              "/notifications",
              params
          )