class_docstr: Encoder to be used as cls in json.dump.
  
  Args:
      args (object): Passed to super class.
      kwargs (dict): Passed to super class.
code: def __init__(self, *args, **kwargs):
      super().__init__(*args, **kwargs)
      self._markers = {}
  
imports: import collections
  import datetime
  import enum
  import functools
  import gc
  import inspect
  import json
  import os
  import pathlib
  import subprocess
  import warnings
  import weakref
  import dateutil.tz
  import dowel
  from dowel import logger
  import numpy
  import __main__
label_desc: Use image node_id 1 to create a new LogEncoder object from inherited base classes: json with example: obj = LogEncoder()