# File lib/moneta/adapters/file.rb, line 52
      def clear(options = {})
        temp_dir = "#{@dir}-#{$$}-#{Thread.current.object_id}"
        ::File.rename(@dir, temp_dir)
        FileUtils.mkpath(@dir)
        self
      rescue Errno::ENOENT
        self
      ensure
        FileUtils.rm_rf(temp_dir)
      end