public MethodBuilder onreturnMethod(String onreturnMethod) {
        this.onreturnMethod = onreturnMethod;
        return getThis();
    }
@Test
    void onreturnMethod() {
        MethodBuilder builder = MethodBuilder.newBuilder();
        builder.onreturnMethod("on-return-method");
        Assertions.assertEquals("on-return-method", builder.build().getOnreturnMethod());
    }