Companion
Functions
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internal operator fun <Value : Any, Return> invoke(aggregationHandler: AggregatorAggregationHandler<Value, Return>, inputHandler: AggregatorInputHandler<Value, Return>, multipleColumnsHandler: AggregatorMultipleColumnsHandler<Value, Return>, statisticsParameters: Map<String, Any>): AggregatorProvider<Value, Return>
Factory function for creating an Aggregator instance given a name.