final int columns = nodeUtils.getIntegerFieldValue( dishNode, "numberOfColumns" ); //$NON-NLS-1$
final List selectedSpots = new ArrayList();
final Collection deselectedSpots = new ArrayList();
for( Enumeration spotNodes = dishNode.children(); spotNodes.hasMoreElements(); )
{
final NavigationTreeNode spotNode = (NavigationTreeNode)spotNodes.nextElement();
final int rowNumber = nodeUtils.getIntegerFieldValue( spotNode, "row" ); //$NON-NLS-1$
final int columnNumber = nodeUtils.getIntegerFieldValue( spotNode, "column" ); //$NON-NLS-1$