code: def __hash__(self) -> int:
      return hash(
          (
              super().__hash__(),
              self.object_type,
              self.name,
              self.if_exists,
          )
      )
  
file_path: evadb/evadb/plan_nodes/drop_object_plan.py
imports: from evadb.parser.types import ObjectType
  from evadb.plan_nodes.abstract_plan import AbstractPlan
  from evadb.plan_nodes.types import PlanOprType
label_desc: Use image node_id 6 for calling the DropObjectPlan obj's underlying member method code with example usage: obj.__hash__() and returns: hash