class_docstr: Optimizer adaptor.
docstr: Register args.
docstr_tok: ["Register","args","."]
code: def add_arguments(
      parser: argparse.ArgumentParser,
  ) -> argparse.ArgumentParser:
      """Register args."""
      return parser
  
imports: import argparse
  from espnet.utils.dynamic_import import dynamic_import
  from espnet.utils.fill_missing_args import fill_missing_args
label_desc: Use image node_id 2 for calling the OptimizerFactoryInterface obj's underlying member method code with example usage: obj.add_arguments(parser) and returns: parser