text: """Concordance-test subcommand for the merge-counts command line tool."""
  
  import argparse
  import tempfile
  from logzero import logger
  
  from . import utils
  
  
  def register(subparsers: argparse.ArgumentParser) -> None:
      """Registers the subcommand arguments with the main program.
  
      Args:
          subparsers (argparse.ArgumentParser): subparsers object to add on to.
      """
  
      subcommand = subparsers.add_parser(
          "concordance-test",
          help="A test command that checks the concordance of recursive and sequential matrix creation.",
          parents=[utils.args.get_common_args()],
      )
      subcommand.set_defaults(run=run)
      return subcommand
  
  
  def run(args: argparse.Namespace) -> None:
      """Main method to run the subcommand.
  
      Args:
          args (argparse.ArgumentParser): parsed arguments from the main module.
      """
  
      if args.developer_mode:
          # enable cache, get the existing one or create a new one
          download_directory = (
              utils.cache.get_cache_folder() or utils.cache.create_new_cache_folder()
          )
          logger.info("Using cache at directory: %s", download_directory)
      else:
          download_directory = tempfile.mkdtemp()
          logger.info(
              "Creating new temporary directory as download directory: %s.",
              download_directory,
          )
  
      files = utils.dx.download_files(
          args.dxids,
          download_directory,
          args.ncpus,
          args.cache,
          enable_filesystem_caching=args.developer_mode,
      )
      dfs = utils.matrix.read_counts(files, limit_inputs=args.limit_inputs)
      utils.matrix.concordance_test(dfs)
  