docs: def get_organizations(self, since=github.GithubObject.NotSet):
          """
          :calls: `GET /organizations <http://developer.github.com/v3/orgs#list-all-organizations>`_
          :param since: integer
          :rtype: :class:`github.PaginatedList.PaginatedList` of :class:`github.Organization.Organization`
          """
          assert since is github.GithubObject.NotSet or isinstance(since, (int, long)), since
          url_parameters = dict()
          if since is not github.GithubObject.NotSet:
              url_parameters["since"] = since
          return github.PaginatedList.PaginatedList(
              github.NamedUser.NamedUser,
              self.__requester,
              "/organizations",
              url_parameters
          )