# File lib/bundler/vendor/fileutils/lib/fileutils.rb, line 412
  def copy_entry(src, dest, preserve = false, dereference_root = false, remove_destination = false)
    Entry_.new(src, nil, dereference_root).wrap_traverse(proc do |ent|
      destent = Entry_.new(dest, ent.rel, false)
      File.unlink destent.path if remove_destination && File.file?(destent.path)
      ent.copy destent.path
    end, proc do |ent|
      destent = Entry_.new(dest, ent.rel, false)
      ent.copy_metadata destent.path if preserve
    end)
  end