code: def destroy_sg(app='', env='', region='', **_):
      
      vpc = get_vpc_id(account=env, region=region)
  
      url = '{api}/securityGroups/{env}/{region}/{app}'.format(api=API_URL, env=env, region=region, app=app)
      payload = {'vpcId': vpc}
      security_group = requests.get(url, params=payload, verify=GATE_CA_BUNDLE, cert=GATE_CLIENT_CERT)
  
      if not security_group:
          LOG.info('Nothing to delete.')
      else:
          LOG.info('Found Security Group in %(region)s: %(name)s', security_group)
  
          destroy_request = get_template('destroy/destroy_sg.json.j2', app=app, env=env, region=region, vpc=vpc)
          wait_for_task(destroy_request)
  
      return True
docs: Destroy Security Group.
  
      Args:
          app (str): Spinnaker Application name.
          env (str): Deployment environment.
          region (str): Region name, e.g. us-east-1.
  
      Returns:
          True upon successful completion.