presto-main/src/main/java/io/prestosql/memory/LowMemoryKiller.java/QueryMemoryInfo/toString
class QueryMemoryInfo:        @Override
        public String toString()
        {
            return toStringHelper(this)
                    .add("queryId", queryId)
                    .add("memoryPoolId", memoryPoolId)
                    .add("memoryReservation", memoryReservation)
                    .toString();
        }