code: def main():
      parser = ArgumentParser()
      parser.add_argument(
          "--input-src",
          type=str,
          required=True,
          help="Path to input file in src language",
      )
      parser.add_argument(
          "--input-tgt",
          type=str,
          required=True,
          help="Path to input file in tgt language",
      )
      parser.add_argument(
          "--output-src",
          type=str,
          required=True,
          help="Path to write the src language output file",
      )
      parser.add_argument(
          "--output-tgt",
          type=str,
          required=True,
          help="Path to write the tgt language output file",
      )
      parser.add_argument(
          "--source-lang",
          type=str,
          required=True,
          help="Language for the source file",
      )
      parser.add_argument(
          "--target-lang",
          type=str,
          required=True,
          help="Language for the target file",
      )
  
      args = parser.parse_args()
  
      (
          src_processor,
          tgt_processor,
      ) = MTEncDecModel.setup_pre_and_post_processing_utils(
          args.source_lang,
          args.target_lang,
          "bpe-placeholder",
          "bpe-placeholder",
      )
      tokenize_normalize(args.input_src, args.output_src, src_processor)
      tokenize_normalize(args.input_tgt, args.output_tgt, tgt_processor)
  
imports: import logging
  from argparse import ArgumentParser
  from nemo.collections.nlp.models.machine_translation.mt_enc_dec_model import MTEncDecModel
label_desc: Use image node_id 2 for calling a global function with example usage: main() without return types