/*
* Now the Over-arching management node.
*/
if (IDsfDebugUIConstants.ID_EXPRESSION_HOVER.equals(getPresentationContext().getId())) {
SingleExpressionVMNode expressionManagerNode = new SingleExpressionVMNode(this);
addChildNodes(rootNode, new IVMNode[] { expressionManagerNode });
} else {
ExpressionManagerVMNode expressionManagerNode = new ExpressionManagerVMNode(this);
addChildNodes(rootNode, new IVMNode[] {expressionManagerNode});
}