docs: def get():
    """Get the config chosen by the flags."""
    configs = {c.name(): c
               for c in lib.RunConfig.all_subclasses() if c.priority()}
  
    if not configs:
      raise sc_process.SC2LaunchError("No valid run_configs found.")
  
    if FLAGS.sc2_run_config is None:  # Find the highest priority as default.
      return max(configs.values(), key=lambda c: c.priority())()
  
    try:
      return configs[FLAGS.sc2_run_config]()
    except KeyError:
      raise sc_process.SC2LaunchError(
          "Invalid run_config. Valid configs are: %s" % (
              ", ".join(sorted(configs.keys()))))