The aggregator for a name, or the given aggregator itself.
a name like "sum" or an own AggregatorIf
"sum"
the aggregator
for an unknown name (the message lists the built-in names)
getAggregator("avg").name; // "avg"getAggregator(Aggregators.max); // the same object Copy
getAggregator("avg").name; // "avg"getAggregator(Aggregators.max); // the same object
1.1.94
The aggregator for a name, or the given aggregator itself.