@Override
  public ASTNode findChildByRole(int role) {
    final ASTNode result = super.findChildByRole(role);
    if (result != null) return result;
    if (role == ChildRole.IMPORT_REFERENCE) {
      return findChildByType(JavaElementType.JAVA_CODE_REFERENCE);
    }
    return null;
  }
@Override
  public ASTNode findChildByRole(int role)