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dataframe
core
/
org.jetbrains.kotlinx.dataframe.impl.aggregation.aggregators.multipleColumnsHandlers
/
TwoStepMultipleColumnsHandler
/
aggregator
aggregator
open
override
var
aggregator
:
Aggregator
<
Value
,
Return
>
?
Reference to the aggregator instance.
Can only be used once
init
has run.