private static void emitCommonNewInstance(CodeEmitter e) {
    e.new_instance_this();
    e.dup();
    e.invoke_constructor_this();
    e.aconst_null();
    e.invoke_static_this(SET_THREAD_CALLBACKS);
    e.return_value();
    e.end_method();
  }
private static void emitCommonNewInstance(CodeEmitter e)