Comment 2 for bug 759130

The patch didn't work, but I commited something similar :

patch :

    @Override
    public String toString() {
        return "Multikey#" + id == null ? "<null>" : "\"" + id + "\""+ "; + id2 == null ? "<null>" : "\"" + id2 + "\""+ "; + id3 == null ? "<null>" : "\"" + id3 + "\"";
    }

commited :

    @Override
    public String toString() {
        return "Multikey#" + id+ ";" + id2+ ";" + id3;
    }