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/julia
    
    the code of the file until where you have to start completion: module Docs
  class Julia
    class CleanHtmlFilter < Filter
      def call
        css('> header', '> footer').remove

        # Julia 1.4+ uses differ
    
      def call
        css('> header', '> footer').remove

        # Julia 1.4+ uses different HTML
        at_css('h1').content = at_css('h1').content

        if at_css('#documenter-page')
          @doc.children = at_css('#documenter-page').children
        end