Bug 157174 [Viewers] Refactor new Viewer API
We are yet not completely happy with the API and refactor it.
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/ViewerColumn.java
}
	/**
	 * Return the editing support for the reciever.
	 * @return {@link EditingSupport}
	 */
	EditingSupport getEditingSupport() {
		return editingSupport;
	}
	/**
	 * Set the editing support.
	 * @param editingSupport
	 *            The {@link EditingSupport} to set.
	 */
	void setEditingSupport(EditingSupport editingSupport) {
		this.editingSupport = editingSupport;
	}
	/**
	 * Refresh the cell for the given columnIndex.
	 * <strong>NOTE:</strong>the {@link ViewerCell}
	 * provided to this method is no longer valid after
	 * this method is exited. Do not cache the cell for
	 * future use.
	 * 
	 * @param cell {@link ViewerCell}
	 */
	public void refresh(ViewerCell cell) {
		getLabelProvider().update(cell);
	}
}