Bug 156883 [Viewers] enhancements to ILazyTreeContentProvider
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/AbstractTreeViewer.java
protected Widget getColumnViewerOwner(int columnIndex) {
		
		return null;
	}
	
	/* (non-Javadoc)
	 * @see org.eclipse.jface.viewers.ColumnViewer#getCellEditors()
	 */
	public CellEditor[] getCellEditors() {
		return new CellEditor[0];
	}
	
	/* (non-Javadoc)
	 * @see org.eclipse.jface.viewers.ColumnViewer#getCellModifier()
	 */
	public ICellModifier getCellModifier() {
		
		
		
		return null;
	}
	
	/* (non-Javadoc)
	 * @see org.eclipse.jface.viewers.ColumnViewer#getColumnProperties()
	 */
	public Object[] getColumnProperties() {
		return new Object[0];
	}
}