presto-main/src/main/java/io/prestosql/memory/MemoryInfo.java/MemoryInfo/toString
class MemoryInfo:    @Override
    public String toString()
    {
        return toStringHelper(this)
                .add("availableProcessors", availableProcessors)
                .add("totalNodeMemory", totalNodeMemory)
                .add("pools", pools)
                .toString();
    }