code: def __init__(self):
      self.type = None
      self.timestamp_ns = 0
      self.addr = 0
      self.process_id = 0
      self.thread_id = 0
      self.increase_bytes = 0
      self.place = None
      self.current_allocated = 0
      self.current_reserved = 0
      self.peak_allocated = 0
      self.peak_reserved = 0
  
imports: import collections
  import functools
  import json
  import re
  import sys
  import tempfile
  from .utils import traverse_tree
label_desc: Use image node_id 1 to create a new MemNode object  with example: obj = MemNode()