code: def setup_parser(sub_parsers):
      
      parser = sub_parsers.add_parser("run", prog="law run", description="Run a task with"
          " configurable parameters. See http://luigi.rtfd.io/en/stable/running_luigi.html for more"
          " info.")
  
      parser.add_argument("task_family", help="a task family registered in the task database file or"
          " a module and task class in the format <module>.<class>")
      parser.add_argument("parameter", nargs="*", help="task parameters")
docs: Sets up the command line parser for the *run* subprogram and adds it to *sub_parsers*.