code: def retrieve(self, model_id):
      try:
          # Get the filter parameters from the request
          params = self.request.query_params
          custom_object_id = None
  
          # Check if the duration exists
          if "custom-object-id" in params:
              custom_object_id = params["custom-object-id"]
              if not self._is_uuid4_pattern(custom_object_id):
                  raise TypeError("custom_object_id is of wrong type")
  
      except Exception as e:
          return Response(
              "Error: %s" % e, status=status.HTTP_400_BAD_REQUEST
          )
  
      custom_object_instance = self.get_queryset().get(
          custom_object_id=custom_object_id
      )
  
      custom_object_pointer = custom_object_instance.custom_object_file
      response = HttpResponse(
          custom_object_pointer, content_type="application/gzip"
      )
      response[
          "Content-Disposition"
      ] = "attachment; filename=NameOfFile"
  
      return response
  
imports: import re
  from django.http import HttpResponse
  from rest_framework import status
  from rest_framework import generics, mixins
  from rest_framework.response import Response
  from modelchimp.serializers.experiment_custom_object import ExperimentCustomObjectSerializer
  from modelchimp.models.experiment_custom_object import ExperimentCustomObject
  from modelchimp.models.membership import Membership
  from modelchimp.models.experiment import Experiment
  from modelchimp.api_permissions import HasProjectMembership
  from rest_framework.permissions import IsAuthenticated
label_desc: Use image node_id 1 for calling the ExperimentCustomObjectAPI obj's underlying member method code with example usage: obj.retrieve(model_id) and returns: response, Response