public ProcessingNode buildNode(Configuration config) throws Exception 
{
          
        String actionSetName = config.getAttribute("name");
        Configuration[] childrenConfig = config.getChildren();
        // Inform other builders that we're in an action-set
        this.treeBuilder.setAttribute(IN_ACTION_SET, Boolean.TRUE);
        // Get the child actions
        ProcessingNode[] nodes = this.buildChildNodes(config);
        // And get their names
        String[] actions = new String[nodes.length];
        for (int i = 0; i <  childrenConfig.length; i++) {
            Configuration childConfig = childrenConfig[i];
            String name = childConfig.getName();
            if ("act".equals(name)) {
                actions[i] = childConfig.getAttribute("action", null);
            } else {
                // Unknown element
                String msg = "Unknown element " + name + " in action-set at " + childConfig.getLocation();
                throw new ConfigurationException(msg);
            }            
        }
        ActionSetNode node = new ActionSetNode(actionSetName, nodes, actions);
        this.treeBuilder.setupNode(node, config);
        // Inform other builders that we're no more in an action-set
        this.treeBuilder.setAttribute(IN_ACTION_SET, null);
        return node;
}