/**
* Get the number of aggregated vertices in the last superstep. Or null if no aggregator is
* available.You have to supply an index, the index is defined by the order you set the aggregator
* classes in {@link GraphJob#setAggregatorClass(Class...)}. Index is starting at zero, so if you
* have a single aggregator you can retrieve it via {@link #getNumLastAggregatedVertices}(0).
*/
public IntWritable getNumLastAggregatedVertices(int index) {
return runner.getNumLastAggregatedVertices(index);
}
