code: def default(self, obj):
      if isinstance(obj, set):
          return list(obj)
      return json.JSONEncoder.default(self, obj)
  
file_path: evalplus/evalplus/inputgen.py
imports: import argparse
  import json
  import os
  from evalplus.data.mbpp import mbpp_serialize_inputs
  from evalplus.gen.chatgpt_gen import ChatGPTGen
  from evalplus.gen.type_mut import TypedMutGen
label_desc: Use image node_id 1 for calling the SetEncoder obj's underlying member method code with example usage: obj.default(obj) and returns: json, list