class_docstr: E2E module.
  
  :param int idim: dimension of inputs
  :param int odim: dimension of outputs
  :param Namespace args: argument Namespace containing options
docstr: Add arguments.
docstr_tok: ["Add","arguments","."]
code: def add_arguments(parser):
      """Add arguments."""
      E2ETransformer.add_arguments(parser)
      E2E.add_conformer_arguments(parser)
      return parser
  
imports: from espnet.nets.pytorch_backend.conformer.argument import add_arguments_conformer_common, verify_rel_pos_type
  from espnet.nets.pytorch_backend.conformer.encoder import Encoder
  from espnet.nets.pytorch_backend.e2e_asr_transformer import E2E
label_desc: Use image node_id 1 for calling the E2E obj's underlying member method code with example usage: obj.add_arguments(parser) and returns: parser