}
        if (size == 1) {
            return ImmutableSortedMap.of(decoder.readString(), readValueSnapshot(decoder));
        }

        ImmutableSortedMap.Builder<String, ValueSnapshot> builder = ImmutableSortedMap.naturalOrder();
        for (int i = 0; i < size; i++) {
            builder.put(decoder.readString(), readValueSnapshot(decoder));
        }
        return builder.build();
    }