code: def _instantiate_app(self, target_cls, kwargs):
      
      parse_context = ParseContext(kwargs['address'].spec_path, dict())
      bundleprops_factory = Bundle(parse_context)
      kwargs['bundles'] = [
        bundleprops_factory.create_bundle_props(bundle)
        for bundle in kwargs['bundles']
      ]
  
      return target_cls(build_graph=self, **kwargs)
docs: For App targets, convert BundleAdaptor to BundleProps.