DefaultMutableTreeNode node) { DefaultMutableTreeNode newNode = new DefaultMutableTreeNode(impact, false); addNode(node, newNode); impactNames.add(impact.getImpactName());  return newNode; }
DefaultMutableTreeNode node) { if (impact == null) return null; DefaultMutableTreeNode newNode = new DefaultMutableTreeNode(impact, false); addNode(node, newNode); impactNames.add(impact.getImpactName());  return newNode; }
    private DefaultMutableTreeNode addImpactToWorkspace(ImpactComponent impact,							DefaultMutableTreeNode node) {      DefaultMutableTreeNode newNode = new DefaultMutableTreeNode(impact, false);      addNode(node, newNode);      impactNames.add(impact.getImpactName());      //   installListeners(sc);      return newNode;    }