class_docstr: Wrapper class for data config YAML
class_docstr_tok: ["Wrapper","class","for","data","config","YAML"]
docstr: Prepend target lang ID token as the target BOS (e.g. for to-many
  multilingual setting). During inference, this requires `--prefix-size 1`
  to force BOS to be lang ID token.
docstr_tok: ["Prepend","target","lang","ID","token","as","the","target","BOS","(","e.g",".","for","to-many","multilingual","setting",")",".","During","inference",",","this","requires","`","--","prefix-size","1","`","to","force","BOS","to","be","lang","ID","token","."]
code: def prepend_tgt_lang_tag(self) -> bool:
      """Prepend target lang ID token as the target BOS (e.g. for to-many
      multilingual setting). During inference, this requires `--prefix-size 1`
      to force BOS to be lang ID token."""
      return self.config.get("prepend_tgt_lang_tag", False)
  
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 8 for calling the S2TDataConfig obj's underlying member method code with example usage: obj.prepend_tgt_lang_tag() and returns: self