docs: def _set_resultdir(name=None):
      """Set or get the directory to store experiment results.
  
  
      Looks at the `name` and create the directory if it doesn"t exist
      or returns it in other cases. If the name is `None`, then the
      function generates an unique name for the results directory.
      Finally, it links the directory to `SYMLINK_NAME`.
  
      Args:
          name (str): file path to an existing directory. It could be
              weather an absolute or a relative to the current working
              directory.
  
      Returns:
          the file path of the results directory.
      """
      # Compute file path of results directory
      resultdir_name = name or "enos_" + datetime.today().isoformat()
      resultdir_path = os.path.abspath(resultdir_name)
  
      # Raise error if a related file exists
      if os.path.isfile(resultdir_path):
          raise EnosFilePathError(resultdir_path,
                                  "Result directory cannot be created due "
                                  "to existing file %s" % resultdir_path)
  
      # Create the result directory if it does not exist
      if not os.path.isdir(resultdir_path):
          os.mkdir(resultdir_path)
          logger.info("Generate results directory %s" % resultdir_path)
  
      # Symlink the result directory with the "cwd/current" directory
      link_path = SYMLINK_NAME
      if os.path.lexists(link_path):
          os.remove(link_path)
      try:
          os.symlink(resultdir_path, link_path)
          logger.info("Symlink %s to %s" % (resultdir_path, link_path))
      except OSError:
          # An harmless error can occur due to a race condition when
          # multiple regions are simultaneously deployed
          logger.warning("Symlink %s to %s failed" %
                         (resultdir_path, link_path))
  
      return resultdir_path