Bug 153993 [Viewers] Common Baseclass for Tree/TableEditorImpl
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/TableEditorImpl.java
private CellEditor cellEditor;
    private CellEditor[] cellEditors;
    private ICellModifier cellModifier;
    private String[] columnProperties;
    private Item tableItem;
    private int columnNumber;