@Override public Inspector entry(int idx) {
        int limit = entries();
        if (idx >= 0 && idx < limit) {
            return new BinaryView(data, names, index, first_child(self) + idx);
        }
        return NixValue.invalid();
    }
A read-only view of a Slime value that is stored in binary format.
vespajlib/src/main/java/com/yahoo/slime/BinaryView.java