presto-spi/src/main/java/io/prestosql/spi/memory/MemoryPoolInfo.java/MemoryPoolInfo/toString
class MemoryPoolInfo:    @Override
    public String toString()
    {
        return format("maxBytes=%s,reservedBytes=%s,reserveRevocableBytes=%s", maxBytes, reservedBytes, reservedRevocableBytes);
    }