code: def add_parser(experiments_subparsers, parent_parser):
      EXPERIMENTS_RUN_HELP = "Run an experiment."
      experiments_run_parser = experiments_subparsers.add_parser(
          "run",
          parents=[parent_parser],
          description=append_doc_link(EXPERIMENTS_RUN_HELP, "exp/run"),
          help=EXPERIMENTS_RUN_HELP,
          formatter_class=formatter.RawDescriptionHelpFormatter,
      )
      _add_run_common(experiments_run_parser)
      experiments_run_parser.set_defaults(func=CmdExperimentsRun)
  
file_path: dvc/dvc/commands/experiments/run.py
imports: import argparse
  from dvc.cli import formatter
  from dvc.cli.utils import append_doc_link
  from dvc.commands.repro import CmdRepro
  from dvc.commands.repro import add_arguments
  from dvc.log import logger
label_desc: Use image node_id 1 for calling a global function with example usage: add_parser(experiments_subparsers, parent_parser) without return types