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: clean_html.rb
    path of file: ./repos/devdocs/lib/docs/filters/rethinkdb
    
    the code of the file until where you have to start completion: module Docs
  class Rethinkdb
    class CleanHtmlFilter < Filter
      def call
        @doc = at_css('.docs-article')

        css('header .title').each do |node|
          node.parent.replace(node)
        end

        css('.lang-selec
    
      def call
        @doc = at_css('.docs-article')

        css('header .title').each do |node|
          node.parent.replace(node)
        end

        css('.lang-selector', '.platform-buttons img', 'hr', '#in-this-article').remove

        css('.command-syntax').each do |node|
          node.name = 'pre'
          node.inner_html = node.inner_html.gsub('</p>', "</p>\n")
        end

        css('pre').each do |node|
          node.content = node.content
        end

        css('h2, h3, h4').each do |node|
          node.name = node.name.sub(/\d/) { |i| i.to_i + 1 }
        end

        css('h1').each do |node|
          next if node['class'].to_s.include?('title')
          node.name = 'h2'
        end

        css('td h2').each do |node|
          node.name = 'h5'
        end

        css('pre').each do |node|
          node['data-language'] = current_url.path[/\A\/api\/(\w+)\//, 1]
        end

        css('.infobox').each do |node|
          node.name = 'blockquote'
        end

        css('> .infobox:last-child:contains("Contribute:")').remove

        css('.additional-help').remove

        doc
      end