code: def _add_parser_arguments_import(self, subparsers):
          
          import_pars = subparsers.add_parser(
              "import", help="Import data.")
  
          import_pars.add_argument(
              '--update', '-u', dest='update',
              default=False, action='store_true',
              help='Only update catalog using live sources.')
          import_pars.add_argument(
              '--load-stubs', dest='load_stubs',
              default=False, action='store_true',
              help='Load stubs before running.')
          import_pars.add_argument(
              '--archived', '-a', dest='archived',
              default=False, action='store_true',
              help='Always use task caches.')
  
          # Control which 'tasks' are executed
          # ----------------------------------
          import_pars.add_argument(
              '--tasks', dest='args_task_list', nargs='*', default=None,
              help='space delimited list of tasks to perform.')
          import_pars.add_argument(
              '--yes', dest='yes_task_list', nargs='+', default=None,
              help='space delimited list of tasks to turn on.')
          import_pars.add_argument(
              '--no', dest='no_task_list', nargs='+', default=None,
              help='space delimited list of tasks to turn off.')
          import_pars.add_argument(
              '--min-task-priority', dest='min_task_priority',
              default=None,
              help='minimum priority for a task to run')
          import_pars.add_argument(
              '--max-task-priority', dest='max_task_priority',
              default=None,
              help='maximum priority for a task to run')
          import_pars.add_argument(
              '--task-groups', dest='task_groups',
              default=None,
              help='predefined group(s) of tasks to run.')
  
          return import_pars
docs: Create parser for 'import' subcommand, and associated arguments.