code: def action(context, request, action=None, resource=None, uid=None):
      
  
      # allow to set the method via the header
      if action is None:
          action = request.get_header("HTTP_X_HTTP_METHOD_OVERRIDE", "CREATE").lower()
  
      # Fetch and call the action function of the API
      func_name = "{}_items".format(action)
      action_func = getattr(api, func_name, None)
      if action_func is None:
          api.fail(500, "API has no member named '{}'".format(func_name))
  
      portal_type = api.resource_to_portal_type(resource)
      items = action_func(portal_type=portal_type, uid=uid)
  
      return {
          "count": len(items),
          "items": items,
          "url": api.url_for("senaite.jsonapi.v1.action", action=action),
      }
docs: Various HTTP POST actions