code: def decode_base(cls, v: bytes) -> bytes:
      return v[1:]
  
imports: import io
  import logging
  import pickle
  import struct
  import typing
  from typing import Any, List, Tuple, TypeVar
  from fate.arch.config import cfg
  from ._table_meta import TableMeta
  from ._type import PartyMeta
label_desc: Use image node_id 4 for calling the _FederationBytesCoder obj's underlying member method code with example usage: obj.decode_base(cls, v) and returns: v