code: def update(
              self, request, pk=None, parent_lookup_seedteam=None,
              parent_lookup_seedteam__organization=None):
          '''Add a user to a team.'''
          user = get_object_or_404(User, pk=pk)
          team = self.check_team_permissions(
              request, parent_lookup_seedteam,
              parent_lookup_seedteam__organization)
          team.users.add(user)
          return Response(status=status.HTTP_204_NO_CONTENTf update(
              self, request, pk=None, parent_lookup_seedteam=None,
              parent_lookup_seedteam__organization=None):
          '''Add a user to a team.'''
          user = get_object_or_404(User, pk=pk)
          team = self.check_team_permissions(
              request, parent_lookup_seedteam,
              parent_lookup_seedteam__organization)
          team.users.add(user)
          return Response(status=status.HTTP_204_NO_CONTENT)
docs: Add a user to a team.