See: Description
| Interface | Description | 
|---|---|
| NamedAggregators.State<InputT,InterT,OutputT> | 
| Class | Description | 
|---|---|
| AggregatorsAccumulator | For resilience,  Accumulatorsare required to be wrapped in a Singleton. | 
| NamedAggregators | This class wraps a map of named aggregators. | 
| NamedAggregatorsAccumulator | AccumulatorV2implementation forNamedAggregators. |