GWTP Nested Presenter : Type<RevealContentHandler<?>> Cannot be resolved
===

I'm trying to make the nested presenter in GWT. 
I've been "copy & paste" code from the sample GWTP project @http://code.google.com/p/gwt-platform/wiki/SimpleNestedSample

At one point the code

    @ContentSlot
	public static final Type<RevealContentHandler<?>> contentSlot = new   Type<RevealContentHandler<?>>();

gave me error and i am not able to find which package to import by eclipse suggestion to resolve error by Type.
(Been trying all the possible "Type" packages by eclipse suggestion such as
    import com.google.gwt.i18n.server.Type;
    import com.google.gwt.dev.asm.Type;
    import com.sun.tools.javac.code.Type;

)

Can anyone tell what package to import?