presto-main/src/main/java/io/prestosql/operator/aggregation/multimapagg/LegacyGroupedMultimapAggregationState.java/LegacyGroupedMultimapAggregationState/LegacyGroupedMultimapAggregationState
class LegacyGroupedMultimapAggregationState:    public LegacyGroupedMultimapAggregationState(Type keyType, Type valueType)
    {
        this.keyType = keyType;
        this.valueType = valueType;
    }