public default void storeState(final Configuration configuration) {
        configuration.setProperty(MAP_REDUCE, this.getClass().getName());
    }
When it is necessary to store the state of a MapReduce job, this method is called.
This is typically required when the MapReduce job needs to be serialized to another machine.
Note that what is stored is simply the instance state, not any processed data.

@param configuration the configuration to store the state of the MapReduce job in.
gremlin-core/src/main/java/org/apache/tinkerpop/gremlin/process/computer/MapReduce.java