assert userProvidedName != null;
    public AddEntryOperation( CSN csn, Name normalizedName, String userProvidedName, Attributes entry )    {        super( csn );        assert normalizedName != null;        assert userProvidedName != null;        assert entry != null;                this.normalizedName = normalizedName;        this.userProvidedName = userProvidedName;        this.entry = ( Attributes ) entry.clone();    }