Generics question

[Linda van der Pal]

This is not really Wicket related, but I don't quite know where else to 
ask this. The question is: why won't this compile?

// I define a model
IModel<List<Subgenre>> subgenreModel = new 
AbstractReadOnlyModel<List<Subgenre>>() {
   ...
}
// Here I try to use the model
FieldSwitchPanel subgenrefield = *new 
SubgenreFieldSwitchPanel("subgenre", subgenreModel);*


// This is the constructor for the class SubgenreFieldSwithcPanel
public SubgenreFieldSwitchPanel(String id, IModel<List<? extends 
DomainObject>> choices) {
   ...
}


// Subgenre extends DomainObject
public class Subgenre extends DomainObject{
   ...
}


The complaint is: The constructor SubgenreFieldSwitchPanel(String, 
IModel<List<Subgenre>>) is undefined.

Thanks,
Linda