result.ReferencedNamespaceKeys = nsReferences
	result.ResourceReferences = ctx.resourceReferences
	return result
}

// convertReferencePolicies extracts all ReferencePolicy into an easily accessibly index.
func convertReferencePolicies(r GatewayResources) AllowedReferences {
	res := map[Reference]map[Reference]*Grants{}
	type namespacedGrant struct {
		Namespace string

	kr := splitInput(b, input)
	kr.Context = NewGatewayContext(cg.PushContext(), "Kubernetes")
	ctx := configContext{
		GatewayResources:  kr,
		AllowedReferences: convertReferencePolicies(kr),
	}
	_, gwMap, _ := convertGateways(ctx)
	ctx.GatewayReferences = gwMap

	b.ResetTimer()
	for n := 0; n < b.N; n++ {
		// for gateway routes, build one VS per gateway+host