code: def __copy__(self):
      # deepcopy the children
      cls = self.__class__
      result = cls.__new__(cls)
      for k, v in self.__dict__.items():
          if k == "_children":
              setattr(result, k, [])
          else:
              setattr(result, k, v)
      return result
  
imports: from abc import ABC, abstractmethod
  from collections import deque
  from typing import Any, List
  from evadb.plan_nodes.types import PlanOprType
label_desc: Use image node_id 11 for calling the AbstractPlan obj's underlying member method code with example usage: obj.__copy__() and returns: result