node constructors return concrete type

node/name/fully_qualified.go

@@ -8,7 +8,7 @@ type FullyQualified struct {
 	Name
 }
 
-func NewFullyQualified(Parts []node.Node) node.Node {
+func NewFullyQualified(Parts []node.Node) *FullyQualified {
 	return &FullyQualified{
 		Name{
 			nil,

node/name/name.go

@@ -11,7 +11,7 @@ type Name struct {
 	Parts    []node.Node
 }
 
-func NewName(Parts []node.Node) node.Node {
+func NewName(Parts []node.Node) *Name {
 	return &Name{
 		nil,
 		nil,

node/name/name_part.go

@@ -11,7 +11,7 @@ type NamePart struct {
 	Value    string
 }
 
-func NewNamePart(Value string) node.Node {
+func NewNamePart(Value string) *NamePart {
 	return &NamePart{
 		nil,
 		nil,

node/name/relative.go

@@ -8,7 +8,7 @@ type Relative struct {
 	Name
 }
 
-func NewRelative(Parts []node.Node) node.Node {
+func NewRelative(Parts []node.Node) *Relative {
 	return &Relative{
 		Name{
 			nil,