def process_link_tree_directive(path = ".", accept = nil)
        path = expand_relative_dirname(:link_tree, path)
        accept = expand_accept_shorthand(accept)
        link_paths(*@environment.stat_sorted_tree_with_dependencies(path), accept)
      end
def process_link_tree_directive(path = ".", accept = nil)
        path = expand_relative_dirname(:link_tree, path)
        accept = expand_accept_shorthand(accept)
        link_paths(*@environment.stat_sorted_tree_with_dependencies(path), accept)
      end
`link_tree` links all the nested files in a directory.
 Its glob equivalent is `path/**/*`.

     //= link_tree "./images"

 Use caution when linking against JS or CSS assets. Include an explicit
 extension or content type in these cases.

     //= link_tree "./styles" .css