diff --git a/examples/foundation/main.go b/examples/foundation/main.go
index 65ef07b..2d7b745 100644
--- a/examples/foundation/main.go
+++ b/examples/foundation/main.go
@@ -8,13 +8,13 @@ import (
 )
 
 func main() {
-	n1 := ns.NSStringStringWithUTF8String(ns.CharFromString("hi there"))
+	n1 := ns.NSStringWithUTF8String(ns.CharFromString("hi there"))
 	c1 := n1.CapitalizedString()
 	gs := c1.UTF8String().String()
 	fmt.Println(gs)
-	n2 := ns.NSStringStringWithUTF8String(ns.CharFromString("hi world"))
-	n3 := ns.NSStringStringWithUTF8String(ns.CharFromString("ok bye"))
-	a := ns.NSMutableArrayArrayWithObjects(n1,n2,n3)
+	n2 := ns.NSStringWithUTF8String(ns.CharFromString("hi world"))
+	n3 := ns.NSStringWithUTF8String(ns.CharFromString("ok bye"))
+	a := ns.NSMutableArrayWithObjects(n1,n2,n3)
 	fmt.Println("Length(a) = ",a.Count())
 	fmt.Println("is n2 in a?",a.ContainsObject(n2))
 	fmt.Println("is c1 in a?",a.ContainsObject(c1))
@@ -23,4 +23,8 @@ func main() {
 	a.AddObject(n4)
 	a.AddObject(n5)
 	fmt.Println("Length(a) = ",a.Count())
+	a2 := a.SubarrayWithRange(ns.NSMakeRange(1,3))
+	fmt.Println("Length(a2) = ",a2.Count())
+	i1 := a.ObjectAtIndex(1).NSString()
+	fmt.Println(i1.UTF8String())
 }
diff --git a/types/convert.go b/types/convert.go
index 620e2e6..2e7c474 100644
--- a/types/convert.go
+++ b/types/convert.go
@@ -21,7 +21,7 @@ func shouldWrap(gt string) bool {
 //are dereferenced to bare interface names.
 var goInterfaces map[string]bool
 
-func isGoInterface(gt string) bool {
+func IsGoInterface(gt string) bool {
 	return goInterfaces[gt]
 }
 
@@ -198,7 +198,7 @@ func _goType(ct string) string {
 	ct = strings.Title(ct)
 	ct = strings.ReplaceAll(ct," ","")
 	ct = strings.ReplaceAll(ct,"Struct","")
-	if len(ct) > 0 && ct[0] == '*' && isGoInterface(ct[1:]) {
+	if len(ct) > 0 && ct[0] == '*' && IsGoInterface(ct[1:]) {
 		return ct[1:]
 	}
 	if ct == "Id" {
@@ -285,14 +285,15 @@ type %s interface {
 }
 `,t.Node.Ctype(),t.BaseType().GoType(),gt)
 	}
-	if isGoInterface(super) {
+	if IsGoInterface(super) {
 		super = "Id"
 	}
 	return fmt.Sprintf(`
 //%s (%s)
 type %s struct { %s }
 func (o *%s) Ptr() unsafe.Pointer { return unsafe.Pointer(o) }
-`,t.Node.Ctype(),t.BaseType().GoType(),gt,super,gt)
+func (o *Id) %s() *%s { return (*%s)(unsafe.Pointer(o)) }
+`,t.Node.Ctype(),t.BaseType().GoType(),gt,super,gt,gt,gt,gt)
 }
 
 func (t *Type) IsFunction() bool {
@@ -337,7 +338,7 @@ func GoToC(name string, pnames []string, rtype *Type, ptypes []*Type) string {
 	rt := rtype.CType()
 	if rt != "void" {
 		rtgt := rtype.GoType()
-		if isGoInterface(rtgt) {
+		if IsGoInterface(rtgt) {
 			rtgt = "*Id"
 		}
 		ret.WriteString("return (" + rtgt + ")(")
@@ -350,7 +351,7 @@ func GoToC(name string, pnames []string, rtype *Type, ptypes []*Type) string {
 	for i := 0; i < len(pnames); i++ {
 		pn,pt := pnames[i],ptypes[i]
 		p := pn
-		if (shouldWrap(pt.GoType()) || isGoInterface(pt.GoType())) && !pt.Variadic {
+		if (shouldWrap(pt.GoType()) || IsGoInterface(pt.GoType())) && !pt.Variadic {
 			p = pn + ".Ptr()"
 		} else {
 			switch {
diff --git a/wrap/main.go b/wrap/main.go
index 15924f9..068309f 100644
--- a/wrap/main.go
+++ b/wrap/main.go
@@ -479,10 +479,23 @@ func (w *Wrapper) _processMethod(m *Method,fun bool) {
 		return
 	}
 	gname := strings.Title(m.Name)
-	if !m.ClassMethod {
+	switch {
+	case !m.ClassMethod:
 		gname = "(o *" + m.Class + ") " + gname
-	} else {
+	case m.Type.GoType() != "*" + m.Class:
 		gname = m.Class + gname
+	default:
+		lens1 := len(m.Class)
+		i := 0
+		if len(gname) < len(m.Class) { i = lens1 - len(gname) }
+		for ; i < lens1; i++ {
+			if m.Class[i:] == gname[:lens1 - i] { break }
+		}
+		if lens1 - i >= len(gname) {
+			gname = m.Class + gname
+		} else {
+			gname = m.Class + gname[lens1-i:]
+		}
 	}
 	cname := m.Name
 	if m.Class != "" {
@@ -495,6 +508,9 @@ func (w *Wrapper) _processMethod(m *Method,fun bool) {
 	if grtype == "Void" {
 		grtype = ""
 	}
+	if types.IsGoInterface(grtype) {
+		grtype = "*Id"
+	}
 	w.goCode.WriteString(fmt.Sprintf(`
 //%s
 func %s(%s) %s {