code: def add_parser(queue_subparsers, parent_parser):
      QUEUE_START_HELP = "Start the experiments task queue worker."
      queue_start_parser = queue_subparsers.add_parser(
          "start",
          parents=[parent_parser],
          description=append_doc_link(QUEUE_START_HELP, "queue/start"),
          help=QUEUE_START_HELP,
          formatter_class=formatter.RawDescriptionHelpFormatter,
      )
      queue_start_parser.add_argument(
          "-j",
          "--jobs",
          type=int,
          default=1,
          help="Maximum number of concurrent queue workers to start. Defaults to 1.",
          metavar="<number>",
      )
      queue_start_parser.set_defaults(func=CmdQueueStart)
  
file_path: dvc/dvc/commands/queue/start.py
imports: from dvc.cli import formatter
  from dvc.cli.command import CmdBase
  from dvc.cli.utils import append_doc_link
  from dvc.log import logger
  from dvc.ui import ui
label_desc: Use image node_id 1 for calling a global function with example usage: add_parser(queue_subparsers, parent_parser) without return types