code: def encode_base(v: bytes) -> bytes:
      return struct.pack("!B", 0) + v
  
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 1 for calling the _FederationBytesCoder obj's underlying member method code with example usage: obj.encode_base(v) and returns: unknown