presto-main/src/main/java/io/prestosql/memory/ClusterMemoryPool.java/ClusterMemoryPool/toString
class ClusterMemoryPool:    @Override
    public synchronized String toString()
    {
        return toStringHelper(this)
                .add("id", id)
                .add("totalDistributedBytes", totalDistributedBytes)
                .add("freeDistributedBytes", getFreeDistributedBytes())
                .add("reservedDistributedBytes", reservedDistributedBytes)
                .add("reservedRevocableDistributedBytes", reservedRevocableDistributedBytes)
                .add("nodes", nodes)
                .add("blockedNodes", blockedNodes)
                .add("assignedQueries", assignedQueries)
                .add("queryMemoryReservations", queryMemoryReservations)
                .add("queryMemoryAllocations", queryMemoryAllocations)
                .add("queryMemoryRevocableReservations", queryMemoryRevocableReservations)
                .toString();
    }