Simple way to use parameterised UI messages in Wicket?

Question

Wicket has a flexible internationalisation system that supports parameterising UI messages in many ways. There are examples e.g. in StringResourceModel javadocs, such as thi

Answer 1

There's a way, which although still involves creating a model, doesn't requires a bean with a getter.

given this message in a properties file:

msg=${} persons

Here's how to replace the placeholder with a value, be it a local variable, a field or a literal:

add(new Label("label", new StringResourceModel("msg", new Model(5))));