code: def run_cli(
          executable,
          mets_url=None,
          resolver=None,
          workspace=None,
          page_id=None,
          log_level=None,
          input_file_grp=None,
          output_file_grp=None,
          parameter=None,
          working_dir=None,
  ):
      
      workspace = _get_workspace(workspace, resolver, mets_url, working_dir)
      args = [executable, '--working-dir', workspace.directory]
      args += ['--mets', mets_url]
      if log_level:
          args += ['--log-level', log_level]
      if page_id:
          args += ['--page-id', page_id]
      if input_file_grp:
          args += ['--input-file-grp', input_file_grp]
      if output_file_grp:
          args += ['--output-file-grp', output_file_grp]
      if parameter:
          args += ['--parameter', parameter]
      log.debug("Running subprocess '%s'", ' '.join(args))
      return subprocess.call(args)
docs: Create a workspace for mets_url and run MP CLI through it