code: def parse_args():
      """Parses command line arguments."""
      parser = argparse.ArgumentParser()
      parser.add_argument(
          "--model_file", type=str, default="", help="pb file to load."
      )
      parser.add_argument(
          "--output_dir",
          type=str,
          default="",
          help="Directory to save the output graph to.",
      )
      parser.add_argument(
          "--layers",
          type=str,
          default="-1",
          help="'start_layer:end_layer' or 'layer', similar to python slice."
          " Use with --validate flag.",
      )
      return parser.parse_known_args()
  
imports: import argparse
  import copy
  import os
  import sh
  import yaml
  from py_proto import mace_pb2
  from transform.base_converter import ConverterUtil
  from transform.base_converter import MaceKeyword
  from transform.base_converter import MaceOp
  from transform.hexagon_converter import HexagonOp
  from utils.config_parser import DataFormat
  from utils.config_parser import ModelKeys
  from utils.util import mace_check
label_desc: Use image node_id 6 for calling a global function with example usage: parse_args() and returns: parser