code: def __on_deserialize__(self):
      super(Subtask, self).__on_deserialize__()
      self._pure_depend_keys = None
      self._repr = None
      self.runtime = None
  
imports: from enum import Enum
  from typing import Iterable, List, Optional, Set, Tuple
  from ...core import ChunkGraph, DAG, ChunkData
  from ...resource import Resource
  from ...serialization.serializables.field_type import TupleType
  from ...serialization.serializables import Serializable, StringField, ReferenceField, Int32Field, Int64Field, Float64Field, BoolField, AnyField, DictField, ListField, TupleField, FieldTypes
  from ...typing import BandType, ChunkType
label_desc: Use image node_id 2 for calling the Subtask obj's underlying member method code with example usage: obj.__on_deserialize__() without return types