       or "/favicon-high.ico". Such matches are useful when serving
       digested files at the root. Defaults to `nil` (no filtering).
 
-    * `:headers` - other headers to be set when serving static assets.
-
   ## Acknowledgment
 
   The source code is derived from `Plug.Static` module.

  the directory listing for a specific directory, use the file
  system path.

  If a static asset cannot be found, `Plug.Static.Ls`
  simply forwards the connection to the rest of the pipeline.

  ## Options


      path = path(from, segments)
      directory_info = file_directory_info(conn, path)
      serve_directory_listing(directory_info, segments)
    else
      conn
    end
