code: def for_host(host)
        if @dirty.include?(host)
          values = []
  
          cookies_for_host(host).each do |name,value|
            values << "#{name}=#{value}"
          end
  
          @cookies[host] = values.join('; ')
          @dirty.delete(host)
        end
  
        return @cookies[host]
      end
docs: Returns the pre-encoded Cookie for a given host.
  
   @param [String] host
     The name of the host.
  
   @return [String]
     The encoded Cookie.
  
   @since 0.2.2