Update AbstractPropertyModel and PropertyModel constructor to include parameter 
 for IModel<?>
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                 Key: WICKET-4462
                 URL: https://issues.apache.org/jira/browse/WICKET-4462
             Project: Wicket
          Issue Type: Improvement
    Affects Versions: 1.5.5
            Reporter: Don Ngo
            Priority: Minor


Please consider adding another constructor to AbstractPropertyModel and 
PropertyModel class to include a parameter for IModel<?>.  Since both of these 
classes implement the IChainingModel interface, I think it makes sense to 
include a parameter for IModel<?> in the constructor for these classes, as in 
the case of CompoundPropertyModel class.

For what's it worth, below is my custom class to enhance the PropertyModel 
class:

public class CustomPropertyModel<T> extends PropertyModel<T> {
        private static final long serialVersionUID = 1L;

        public CustomPropertyModel(IModel<T> model, String expression) {
                super(model.getObject(), expression);
                setChainedModel(model);
        }
}

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