docstr: Decoder arch related args
docstr_tok: ["Decoder","arch","related","args"]
code: def decoder_args(self):
      """Decoder arch related args"""
      args = self.config.get("decoder_args", {})
      return Namespace(**args)
  
imports: import logging
  from argparse import Namespace
  from copy import deepcopy
  from pathlib import Path
  from typing import Dict, Optional
  from fairseq.data import Dictionary
label_desc: Use image node_id 4 for calling the SingleTaskConfig obj's underlying member method code with example usage: obj.decoder_args() and returns: Namespace