code: def get_domain_id_for_operation(request):
      
  
      domain_context = request.session.get('domain_context')
      if domain_context:
          return domain_context
      return api.keystone.get_effective_domain_id(request)
docs: Get the ID of the domain in which the current operation should happen.
  
      If the user has a domain context set, use that, otherwise use the user's
      effective domain.