get the aggregated value that an aggregator computed in the previous iteration . concode_field_sep IterationRuntimeContext runtimeContext concode_elem_sep long numberOfVertices concode_field_sep void postSuperstep concode_elem_sep void init concode_elem_sep T getIterationAggregator concode_elem_sep int getSuperstepNumber concode_elem_sep void preSuperstep concode_elem_sep Collection<T> getBroadcastSet concode_elem_sep long getNumberOfVertices concode_elem_sep void setNumberOfVertices concode_elem_sep M gather
T function ( String arg0 ) { return this . runtimeContext . < T > getPreviousIterationAggregate ( arg0 ) ; }