}
            encoder.writeBinary(valueSnapshot.getValue());
        } else if (snapshot instanceof MapValueSnapshot) {
            MapValueSnapshot mapSnapshot = (MapValueSnapshot) snapshot;
            encoder.writeSmallInt(MAP_SNAPSHOT);
            encoder.writeSmallInt(mapSnapshot.getEntries().size());

        public ValueSnapshot map(ImmutableList<MapEntrySnapshot<ValueSnapshot>> elements) {
            return new MapValueSnapshot(elements);
        }

        @Override
        public ValueSnapshot properties(ImmutableList<MapEntrySnapshot<ValueSnapshot>> elements) {
            return new MapValueSnapshot(elements);
        }
    }

        builder.add(new MapEntrySnapshot<ValueSnapshot>(string("123"), integer(123)))
        builder.add(new MapEntrySnapshot<ValueSnapshot>(string("456"), list(integer(-12), integer(12))))
        def original = new MapValueSnapshot(builder.build())
        write(original)

        expect:
        original == written
    }

    def "serializes managed type properties"() {