code: def __hash__(self) -> int:
      return hash(self.opr_type)
  
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 9 for calling the AbstractPlan obj's underlying member method code with example usage: obj.__hash__() and returns: hash