presto-main/src/main/java/io/prestosql/operator/OperatorContext.java/OperatorContext/localRevocableMemoryContext
class OperatorContext:    public LocalMemoryContext localRevocableMemoryContext()
    {
        return new InternalLocalMemoryContext(operatorMemoryContext.localRevocableMemoryContext(), revocableMemoryFuture, this::updatePeakMemoryReservations, false);
    }