docstr: Returns the parent of current node
  
  Returns:
      AbstractPlan -- parent node
docstr_tok: ["Returns","the","parent","of","current","node","Returns",":","AbstractPlan","--","parent","node"]
code: def parent(self):
      """Returns the parent of current node
  
      Returns:
          AbstractPlan -- parent node
      """
      return self._parent
  
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 3 for calling the AbstractPlan obj's underlying member method code with example usage: obj.parent() and returns: self