public static GrNamedArgument findNamedArgument(final GrNamedArgumentsOwner namedArgumentOwner,
                                                  String label) {
    for (PsiElement cur = namedArgumentOwner.getFirstChild(); cur != null; cur = cur.getNextSibling()) {
      if (cur instanceof GrNamedArgument) {
        if (label.equals(((GrNamedArgument)cur).getLabelName())) {
          return (GrNamedArgument)cur;
        }
      }
    }

    return null;
  }
public static GrNamedArgument findNamedArgument(final GrNamedArgumentsOwner namedArgumentOwner,
                                                  String label)