verify(tab).addClickHandler( any( ClickHandler.class ) );
verify(tab).add( any( Widget.class ) );
assertEquals( tab.asTabLink(), uberTabPanel.tabIndex.get( presenter ) );
assertEquals( presenter, uberTabPanel.tabInvertedIndex.get( tab.asTabLink() ));
verify(dndManager).makeDraggable( any( WorkbenchPartPresenter.View.class ), any( Widget.class ) );
Class<Widget> closeButtom = Widget.class;
verify(tab).addDecorate( any( closeButtom ) );