code: def _check_db_connection(self):
      db_conn = connections["default"]
      db_conn.cursor()
  
file_path: modelchimp/modelchimp/management/commands/check_connection.py
imports: from uuid import uuid4
  from django.core.management.base import BaseCommand
  from django.db import connections
  from django.core.files.storage import default_storage
  from django.conf import settings
  from django.core.mail import send_mail
label_desc: Use image node_id 3 for calling the Command obj's underlying member method code with example usage: obj._check_db_connection() without return types