private void setNodeSelected(final DefaultMutableTreeNode o, final boolean value) {
    final Object userObject = o.getUserObject();
    if (userObject instanceof PsiMethod) {
      myData.get((PsiMethod)userObject).setReturnFlag(value);
    }
    else if (userObject instanceof PsiParameter) {
      final PsiMethod method = getMethodByNode(o);
      final int index = method.getParameterList().getParameterIndex((PsiParameter)userObject);
      myData.get(method).getParamFlags()[index] = value;
    }
  }
private void setNodeSelected(final DefaultMutableTreeNode o, final boolean value)