code: def main():
      common.main(
          run_treebank,
          "pos",
          "tagger",
          add_pos_args,
          tagger.build_argparse(),
          build_model_filename=build_model_filename,
          choose_charlm_method=choose_pos_charlm,
      )
  
file_path: stanza/stanza/utils/training/run_pos.py
imports: import logging
  import os
  from stanza.models import tagger
  from stanza.resources.default_packages import no_pretrain_languages, pos_pretrains, default_pretrains
  from stanza.utils.training import common
  from stanza.utils.training.common import Mode, add_charlm_args, build_pos_charlm_args, choose_pos_charlm, find_wordvec_pretrain
label_desc: Use image node_id 5 for calling a global function with example usage: main() without return types