code: def list(self, request, *args, **kwargs):
          
          return super(MergedPriceListItemViewSet, self).list(request, *args, **kwargs)
docs: To get a list of price list items, run **GET** against */api/merged-price-list-items/*
          as authenticated user.
  
          If service is not specified default price list items are displayed.
          Otherwise service specific price list items are displayed.
          In this case rendered object contains {"is_manually_input": true}
  
          In order to specify service pass query parameters:
          - service_type (Azure, OpenStack etc.)
          - service_uuid
  
          Example URL: http://example.com/api/merged-price-list-items/?service_type=Azure&service_uuid=cb658b491f3644a092dd223e894319be