module FakeFS::FileUtils

def chown_R(user, group, list, _options = {})
  list = Array(list)
  list.each do |file|
    chown(user, group, file)
    [FileSystem.find_with_glob("#{file}/**/**")].flatten.each do |f|
      chown(user, group, f.to_s)
    end
  end
  list
end