code: def __str__(self):
      return (
          "input:"
          + str(self.input)
          + " output:"
          + str(self.output)
          + " type:"
          + str(self.type)
          + " is_delete:"
          + str(self.is_delete)
          + " size:"
          + str(self.size)
      )
  
imports: import copy
  import json
  import random
  from enum import Enum, unique
label_desc: Use image node_id 4 for calling the Layer obj's underlying member method code with example usage: obj.__str__() and returns: unknown