code: def get_last_submitted(self, obj):
      result = obj.ml_model_project.order_by("-date_created")
  
      if result.count() > 0:
          result = result[0].date_created
      else:
          result = obj.date_created
  
      return result.strftime("%b %d %Y, %H:%M:%S")
  
file_path: modelchimp/modelchimp/serializers/project.py
imports: from uuid import uuid4
  from rest_framework import serializers
  from django.db import transaction
  from modelchimp.models.project import Project
  from modelchimp.models.membership import Membership
  from modelchimp.serializers.membership import MembershipSerializer
label_desc: Use image node_id 4 for calling the ProjectSerializer obj's underlying member method code with example usage: obj.get_last_submitted(obj) and returns: result