# File lib/selenium/webdriver/common/proxy.rb, line 20
      def initialize(opts = {})
        opts = opts.dup

        self.type        = opts.delete(:type) if opts.has_key? :type
        self.ftp         = opts.delete(:ftp) if opts.has_key? :ftp
        self.http        = opts.delete(:http) if opts.has_key? :http
        self.no_proxy    = opts.delete(:no_proxy) if opts.has_key? :no_proxy
        self.ssl         = opts.delete(:ssl) if opts.has_key? :ssl
        self.pac         = opts.delete(:pac) if opts.has_key? :pac
        self.auto_detect = opts.delete(:auto_detect) if opts.has_key? :auto_detect

        unless opts.empty?
          raise ArgumentError, "unknown option#{'s' if opts.size != 1}: #{opts.inspect}"
        end
      end