@Override
    public Configuration getConfiguration() {
        final Configuration conf = super.getConfiguration();
        conf.setProperty(INCLUDE_META_PROPERTIES, this.includeMetaProperties);
        if (null != this.writePartition)
            conf.setProperty(WRITE_PARTITION, this.writePartition);
        if (null != this.readPartitions)
            conf.setProperty(READ_PARTITIONS, this.readPartitions);
        if (null != this.partitionKey)
            conf.setProperty(PARTITION_KEY, this.partitionKey);
        return conf;
    }
Takes a {@link Map} of a {@link List} of {@link Property} objects and unwraps the {@link Property#value()}.
gremlin-core/src/main/java/org/apache/tinkerpop/gremlin/process/traversal/strategy/decoration/PartitionStrategy.java