code: def from_json(cls, json_string):
      data = json.loads(json_string)
      return cls.from_dict(data)
  
imports: import hashlib
  import json
  import sys
  import platform
  from collections import defaultdict
  from datetime import datetime, timedelta
label_desc: Use image node_id 7 for calling the Workflow obj's underlying member method code with example usage: obj.from_json(cls, json_string) and returns: cls