Page History

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Component#renderHead(HtmlHeaderContainer) was very similar to the usually used Component#renderHead(IHeaderResponse). So it has been renamed to avoid any confusions.

org.apache.wicket.request.resource.ResourceReference#getDependencies() now returns a mutable List<HeaderItem> WICKET-5124

The old API returned Iterable<? extends HeaderItem> and was inconvenient to override and add additional dependencies.
With the new API it is as easy as:

@Override
public List<HeaderItem> getDependencies() {
  List<HeaderItem> dependencies = super.getDependencies();
  dependencies.add(dep1);
  dependencies.add(dep2);
  return dependencies;
}