presto-memory-context/src/main/java/io/prestosql/memory/context/MemoryTrackingContext.java/MemoryTrackingContext/newAggregateRevocableMemoryContext
class MemoryTrackingContext:    public AggregatedMemoryContext newAggregateRevocableMemoryContext()
    {
        return revocableAggregateMemoryContext.newAggregatedMemoryContext();
    }