if (!classOptimizer.class$) {
MethodVisitor mv = classOptimizer.visitMethod(ACC_STATIC
| ACC_SYNTHETIC, "class$",
"(Ljava/lang/String;)Ljava/lang/Class;", null, null);
mv.visitCode();
Label l0 = new Label();
Label l1 = new Label();
Label l2 = new Label();
mv.visitTryCatchBlock(l0, l1, l2,
"java/lang/ClassNotFoundException");