public GraphSONVersion getVersion() {
        return this.version;
    }
An extension to the standard Jackson {@code ObjectMapper} which automatically registers the standard
{@link GraphSONModule} for serializing {@link Graph} elements.  This class
can be used for generalized JSON serialization tasks that require meeting GraphSON standards.
<p/>
{@link Graph} implementations providing an {@link IoRegistry} should register their {@code SimpleModule}
implementations to it as follows:
<pre>
{@code
public class MyGraphIoRegistry extends AbstractIoRegistry {
  public MyGraphIoRegistry() {
    register(GraphSONIo.class, null, new MyGraphSimpleModule());
  }
}
}
</pre>

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