diff -r 72d5f7163f12 -r c79e191854e4 src/jdk.compiler/share/classes/com/sun/source/util/TreeBuilder.java
--- a/src/jdk.compiler/share/classes/com/sun/source/util/TreeBuilder.java	Mon Apr 01 14:46:17 2019 +0200
+++ b/src/jdk.compiler/share/classes/com/sun/source/util/TreeBuilder.java	Tue Apr 02 16:51:25 2019 +0200
@@ -151,13 +151,6 @@
         }
     }
 
-//    interface TypeArgs { //???
-//        TypeArgs type(Consumer<Type> t);
-//        TypeArgs _extends(Consumer<Type> t);
-//        TypeArgs _super(Consumer<Type> t);
-//        TypeArgs unbound();
-//    }
-//
     interface Expression {
         void equal_to(Consumer<Expression> lhs, Consumer<Expression> rhs);
         void minusminus(Consumer<Expression> expr);