@Override
        public void serialize(final Property property, final JsonGenerator jsonGenerator, final SerializerProvider serializerProvider)
                throws IOException {
            jsonGenerator.writeStartObject();
            jsonGenerator.writeObjectField(GraphSONTokens.KEY, property.key());
            jsonGenerator.writeObjectField(GraphSONTokens.VALUE, property.value());
            jsonGenerator.writeEndObject();
        }
GraphSON serializers for graph-based objects such as vertices, edges, properties, and paths. These serializers
present a generalized way to serialize the implementations of core interfaces.

@author Stephen Mallette (http://stephen.genoprime.com)
gremlin-core/src/main/java/org/apache/tinkerpop/gremlin/structure/io/graphson/GraphSONSerializersV2.java