You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: rss.rb
    path of file: ./repos/ruby-packer/ruby/lib/rss
    
    the code of the file until where you have to start completion: # frozen_string_literal: false
require "time"

class Time
  class << self
    unless respond_to?(:w3cdtf)
      # This method converts a W3CDTF string date/time format to Time object.
      #
      # The W3CDTF format is defined here: http://www.w3.org/TR/NOTE-datetime
      #
      
    
    def install_have_child_element(tag_name, uri, occurs, name=nil, type=nil)
      name ||= tag_name
      add_need_initialize_variable(name)
      install_model(tag_name, uri, occurs, name)

      writer_type, reader_type = type
      def_corresponded_attr_writer name, writer_type
      def_corresponded_attr_reader name, reader_type
      install_element(name) do |n, elem_name|
        <<-EOC
        if @#{n}
          "\#{@#{n}.to_s(need_convert, indent)}"
        else
          ''
        end
EOC
      end