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/yarn
    
    the code of the file until where you have to start completion: module Docs
  class Yarn
    class CleanHtmlFilt
    
      def other
        @doc = at_css('.guide')

        css('a.toc', '.nav-tabs', '#select-platform', '.guide-controls + .list-group', '.guide-controls').remove

        css('.install-select-os', '#install-instructions > .install-os-instructions:first-child').remove
        css('.install-os-instructions[style]').remove_attribute('style')

        css('.guide-content', '.tabs', '.tab-content').each do |node|
          node.before(node.children).remove
        end

        unless at_css('h2')
          css('h3', 'h4', 'h5').each do |node|
            node.name = node.name.sub(/\d/) { |i| i.to_i - 1 }
          end
        end