code: def add_cmdline_args(
      cls, parser: ParlaiParser, partial_opt: Optional[Opt] = None
  ) -> ParlaiParser:
      GPT2WithRetrieverAgent.add_cmdline_args(parser, partial_opt)
      SearchQuerySearchEngineFiDAgent.add_cmdline_args(
          parser, partial_opt
      )
      return parser
  
imports: from typing import Optional, Tuple, List, Union
  import torch
  import torch.nn
  from parlai.agents.fid.fid import FidModel, FidAgent, SearchQuerySearchEngineFiDAgent, WizIntGoldDocRetrieverFiDAgent
  from parlai.agents.hugging_face.gpt2 import Gpt2Agent
  from parlai.agents.rag.rag import BaseGenerationAgentMixin
  from parlai.agents.rag.retrievers import Document
  from parlai.core.dict import DictionaryAgent
  from parlai.core.message import Message
  from parlai.core.opt import Opt
  from parlai.core.params import ParlaiParser
  from parlai.core.torch_agent import Batch, Output
  from parlai.core.torch_generator_agent import TorchGeneratorAgent
  from parlai.utils.torch import padded_tensor
  from projects.seeker.agents.seeker import SeekerAgent
  from projects.seeker.agents.gpt2_seeker_modules import GPT2WithRetrieverModel, ComboGPT2Model
label_desc: Use image node_id 1 for calling the GPT2WithRetrieverSearchQueryAgent obj's underlying member method code with example usage: obj.add_cmdline_args(cls, parser, partial_opt) and returns: parser