# File lib/fakefs/fileutils.rb, line 34
    def mkdir(list, _ignored_options = {})
      list = [list] unless list.is_a?(Array)
      list.each do |path|
        parent = path.split('/')
        parent.pop
        fail Errno::ENOENT, path unless parent.join == '' ||
                                        parent.join == '.' ||
                                        FileSystem.find(parent.join('/'))
        fail Errno::EEXIST, path if FileSystem.find(path)
        FileSystem.add(path, FakeDir.new)
      end
    end