# File lib/mechanize/cookie_jar.rb, line 86
    def load(file, format = :yaml)
      @jar = ::File.open(file) { |f|
        case format
        when :yaml then
          YAML::load(f)
        when :cookiestxt then
          load_cookiestxt(f)
        else
          raise "Unknown cookie jar file format"
        end
      }
    end