code: def main():
      """
      Main entrypoint into the command line interface.
      """
      args = parser.parse_args()
      if hasattr(args, "bbox"):
          _parse_sync_command(args)
      elif args.verbose:
          _show_versions.show_versions()
      else:
          parser.print_help()
  
file_path: pyproj/pyproj/__main__.py
imports: import argparse
  import os
  from pyproj import __proj_version__, __version__, _show_versions
  from pyproj.aoi import BBox
  from pyproj.datadir import get_data_dir, get_user_data_dir
  from pyproj.sync import _download_resource_file, get_proj_endpoint, get_transform_grid_list
label_desc: Use image node_id 2 for calling a global function with example usage: main() without return types