Bug 160000 [DataBinding] Convert scenarios to official APIs
tests/org.eclipse.jface.tests.databinding/src/org/eclipse/jface/tests/databinding/scenarios/ComboScenarios.java
combo.dispose();
        combo = null;
        cviewer = null;
        super.tearDown();
    }
    protected Object getViewerSelection() {
        return ((IStructuredSelection) cviewer.getSelection()).getFirstElement();
    }
    /**
     * @return the ComboViewer's domain object list
     */
    protected List getViewerContent(ComboViewer cviewer) {
        Object[] elements = ((IStructuredContentProvider) cviewer.getContentProvider()).getElements(null);
        if (elements != null)
            return Arrays.asList(elements);
        return null;
    }
    /**
     * 
     * @return the combo's items (String[]), which is the same thing as the
     *         Viewer's labels
     * 
     */
    protected List getComboContent() {
        String[] elements = combo.getItems();
        if (elements != null)
            return Arrays.asList(elements);
        return null;
    }
    protected List getColumn(Object[] list, String feature) {