I'm trying to upgrade an application from 1.2.6 to 1.3.0-rc1. I've read the
documentation, upgrade guide and mailing list archives. However, I don't
seem to grasp how to upgrade the following class to 1.3.0:

import org.apache.wicket.Component;
import org.apache.wicket.model.AbstractReadOnlyModel;

/**
 * A simple model that represents a resource by its key
 * 
 * @author ivaynberg
 */
public class ResourceModel extends AbstractReadOnlyModel {
    private String key;

    /**
     * Constructor
     * 
     * @param key of the resource this model represents
     */
    public ResourceModel(String key) {
        this.key = key;
    }

    /**
     * @see wicket.model.AbstractReadOnlyModel#getObject(wicket.Component)
     */
    public Object getObject(Component component) {
        return component.getLocalizer().getString(key, component);
    }
}

Most of the documentation seems to indicate I don't need this class anymore.
Is that true?

Thanks,

Matt
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