code: def post_team_iteration(self, iteration, team_context):
          
          project = None
          team = None
          if team_context is not None:
              if team_context.project_id:
                  project = team_context.project_id
              else:
                  project = team_context.project
              if team_context.team_id:
                  team = team_context.team_id
              else:
                  team = team_context.team
  
          route_values = {}
          if project is not None:
              route_values['project'] = self._serialize.url('project', project, 'string')
          if team is not None:
              route_values['team'] = self._serialize.url('team', team, 'string')
          content = self._serialize.body(iteration, 'TeamSettingsIteration')
          response = self._send(http_method='POST',
                                location_id='c9175577-28a1-4b06-9197-8636af9f64ad',
                                version='5.0',
                                route_values=route_values,
                                content=content)
          return self._deserialize('TeamSettingsIteration', response)
docs: PostTeamIteration.
          Add an iteration to the team
          :param :class:`<TeamSettingsIteration> <azure.devops.v5_0.work.models.TeamSettingsIteration>` iteration: Iteration to add
          :param :class:`<TeamContext> <azure.devops.v5_0.work.models.TeamContext>` team_context: The team context for the operation
          :rtype: :class:`<TeamSettingsIteration> <azure.devops.v5_0.work.models.TeamSettingsIteration>`