this is handled in HtmlUnit

Author: rbri

src/test/java/net/sourceforge/htmlunit/DelegatorAndHostObjectTest.java

@@ -65,14 +65,6 @@ public void delegatorAsParameter() {
         test("var t = new MyHostObject().createDelegator(); t.methodWithParam(t);", 123);
     }
 
-    @Test
-    public void delegatorAnd__defineGetter__() {
-        final String script = "var t = new MyHostObject().createDelegator();\n"
-            + "t.__defineGetter__('foo', function(a) { return 'hello' });\n"
-            + "t.foo;";
-        test(script, "hello");
-    }
-
     @Test
     public void strictEquals() {
         test("var o = new MyHostObject(); o.createDelegator() === o", true);