class_docstr: Arguments:
      target_list List[(AbstractExpression)]: projection list
code: def __str__(self):
      return "ProjectPlan(target_list={})".format(self.target_list)
  
file_path: evadb/evadb/plan_nodes/project_plan.py
imports: from typing import List
  from evadb.expression.abstract_expression import AbstractExpression
  from evadb.plan_nodes.abstract_plan import AbstractPlan
  from evadb.plan_nodes.types import PlanOprType
label_desc: Use image node_id 2 for calling the ProjectPlan obj's underlying member method code with example usage: obj.__str__() and returns: str