@Nullable
 @Override
 public String getDescriptionText(@NotNull String pattern) {
   if (myParameterObject instanceof SNode) {
     return NodePresentationUtil.descriptionText((SNode) myParameterObject);
   }
   return "" + myParameterObject;
 }
 public String getDescriptionText(String pattern) {
   return "^" + NodePresentationUtil.descriptionText(myReferentNode, true);
 }