diff --git a/tools/exp/gen/funcprop.go b/tools/exp/gen/funcprop.go
index a74f040..eb51970 100644
--- a/tools/exp/gen/funcprop.go
+++ b/tools/exp/gen/funcprop.go
@@ -458,6 +458,7 @@ func (p *FunctionalPropertyGenerator) singleTypeDef() *codegen.Struct {
 	}
 	kindMembers = append(kindMembers, p.unknownMemberDef())
 	kindMembers = append(kindMembers, p.iriMemberDef())
+	// TODO: Normalize alias of values when setting on this property.
 	kindMembers = append(kindMembers, jen.Id(aliasMember).String())
 	if p.hasNaturalLanguageMap {
 		kindMembers = append(kindMembers, jen.Id(langMapMember).Map(jen.String()).String())
diff --git a/tools/exp/gen/type.go b/tools/exp/gen/type.go
index 6715a59..4a56710 100644
--- a/tools/exp/gen/type.go
+++ b/tools/exp/gen/type.go
@@ -384,6 +384,7 @@ func (t *TypeGenerator) members() (members []jen.Code) {
 	for _, property := range p {
 		members = append(members, jen.Id(t.memberName(property)).Qual(property.GetPublicPackage().Path(), property.InterfaceName()))
 	}
+	// TODO: Normalize alias of properties when setting properties.
 	members = append(members, jen.Id(aliasMember).String())
 	members = append(members, jen.Id(unknownMember).Map(jen.String()).Interface())
 	return