tinkergraph-gremlin/src/main/java/org/apache/tinkerpop/gremlin/tinkergraph/structure/TinkerIoRegistryV3.java [149:213]:
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    final static class TinkerGraphJacksonSerializer extends StdScalarSerializer<TinkerGraph> {

        public TinkerGraphJacksonSerializer() {
            super(TinkerGraph.class);
        }

        @Override
        public void serialize(final TinkerGraph graph, final JsonGenerator jsonGenerator, final SerializerProvider serializerProvider)
                throws IOException {
            jsonGenerator.writeStartObject();
            jsonGenerator.writeFieldName(GraphSONTokens.VERTICES);
            jsonGenerator.writeStartArray();

            final Iterator<Vertex> vertices = graph.vertices();
            while (vertices.hasNext()) {
                serializerProvider.defaultSerializeValue(vertices.next(), jsonGenerator);
            }

            jsonGenerator.writeEndArray();
            jsonGenerator.writeFieldName(GraphSONTokens.EDGES);
            jsonGenerator.writeStartArray();

            final Iterator<Edge> edges = graph.edges();
            while (edges.hasNext()) {
                serializerProvider.defaultSerializeValue(edges.next(), jsonGenerator);
            }

            jsonGenerator.writeEndArray();
            jsonGenerator.writeEndObject();
        }
    }

    /**
     * Deserializes the edge list format.
     */
    static class TinkerGraphJacksonDeserializer extends StdDeserializer<TinkerGraph> {
        public TinkerGraphJacksonDeserializer() {
            super(TinkerGraph.class);
        }

        @Override
        public TinkerGraph deserialize(final JsonParser jsonParser, final DeserializationContext deserializationContext) throws IOException, JsonProcessingException {
            final Configuration conf = new BaseConfiguration();
            conf.setProperty("gremlin.tinkergraph.defaultVertexPropertyCardinality", "list");
            final TinkerGraph graph = TinkerGraph.open(conf);

            while (jsonParser.nextToken() != JsonToken.END_OBJECT) {
                if (jsonParser.getCurrentName().equals("vertices")) {
                    while (jsonParser.nextToken() != JsonToken.END_ARRAY) {
                        if (jsonParser.currentToken() == JsonToken.START_OBJECT) {
                            final DetachedVertex v = (DetachedVertex) deserializationContext.readValue(jsonParser, Vertex.class);
                            v.attach(Attachable.Method.getOrCreate(graph));
                        }
                    }
                } else if (jsonParser.getCurrentName().equals("edges")) {
                    while (jsonParser.nextToken() != JsonToken.END_ARRAY) {
                        if (jsonParser.currentToken() == JsonToken.START_OBJECT) {
                            final DetachedEdge e = (DetachedEdge) deserializationContext.readValue(jsonParser, Edge.class);
                            e.attach(Attachable.Method.getOrCreate(graph));
                        }
                    }
                }
            }

            return graph;
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tinkergraph-gremlin/src/main/java/org/apache/tinkerpop/gremlin/tinkergraph/structure/TinkerIoRegistryV4.java [149:213]:
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    final static class TinkerGraphJacksonSerializer extends StdScalarSerializer<TinkerGraph> {

        public TinkerGraphJacksonSerializer() {
            super(TinkerGraph.class);
        }

        @Override
        public void serialize(final TinkerGraph graph, final JsonGenerator jsonGenerator, final SerializerProvider serializerProvider)
                throws IOException {
            jsonGenerator.writeStartObject();
            jsonGenerator.writeFieldName(GraphSONTokens.VERTICES);
            jsonGenerator.writeStartArray();

            final Iterator<Vertex> vertices = graph.vertices();
            while (vertices.hasNext()) {
                serializerProvider.defaultSerializeValue(vertices.next(), jsonGenerator);
            }

            jsonGenerator.writeEndArray();
            jsonGenerator.writeFieldName(GraphSONTokens.EDGES);
            jsonGenerator.writeStartArray();

            final Iterator<Edge> edges = graph.edges();
            while (edges.hasNext()) {
                serializerProvider.defaultSerializeValue(edges.next(), jsonGenerator);
            }

            jsonGenerator.writeEndArray();
            jsonGenerator.writeEndObject();
        }
    }

    /**
     * Deserializes the edge list format.
     */
    static class TinkerGraphJacksonDeserializer extends StdDeserializer<TinkerGraph> {
        public TinkerGraphJacksonDeserializer() {
            super(TinkerGraph.class);
        }

        @Override
        public TinkerGraph deserialize(final JsonParser jsonParser, final DeserializationContext deserializationContext) throws IOException, JsonProcessingException {
            final Configuration conf = new BaseConfiguration();
            conf.setProperty("gremlin.tinkergraph.defaultVertexPropertyCardinality", "list");
            final TinkerGraph graph = TinkerGraph.open(conf);

            while (jsonParser.nextToken() != JsonToken.END_OBJECT) {
                if (jsonParser.getCurrentName().equals("vertices")) {
                    while (jsonParser.nextToken() != JsonToken.END_ARRAY) {
                        if (jsonParser.currentToken() == JsonToken.START_OBJECT) {
                            final DetachedVertex v = (DetachedVertex) deserializationContext.readValue(jsonParser, Vertex.class);
                            v.attach(Attachable.Method.getOrCreate(graph));
                        }
                    }
                } else if (jsonParser.getCurrentName().equals("edges")) {
                    while (jsonParser.nextToken() != JsonToken.END_ARRAY) {
                        if (jsonParser.currentToken() == JsonToken.START_OBJECT) {
                            final DetachedEdge e = (DetachedEdge) deserializationContext.readValue(jsonParser, Edge.class);
                            e.attach(Attachable.Method.getOrCreate(graph));
                        }
                    }
                }
            }

            return graph;
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