presto-main/src/main/java/io/prestosql/operator/OperatorContext.java/OperatorContext/newAggregateRevocableMemoryContext
class OperatorContext:    public AggregatedMemoryContext newAggregateRevocableMemoryContext()
    {
        return new InternalAggregatedMemoryContext(operatorMemoryContext.newAggregateRevocableMemoryContext(), revocableMemoryFuture, this::updatePeakMemoryReservations, true);
    }