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: entries.rb
    path of file: ./repos/devdocs/lib/docs/filters/immutable
    
    the code of the file until where you have to start completion: module Docs
  class Immutable
    class EntriesFilter < Docs::EntriesFilter
      def get_name
        at_css('h1').content
      end

      def get_type
        return 'Util' if slug.match?(/^([a-z]|Range|Repea
    
      def additional_entries
        return [] if root_page?
        entries = []
        css('h2, h3, h4').each do |node|
          name = node.content
          id = node.parent['id']
          next unless id
          entries << ["#{type}.#{name}", id, type]
        end
        entries
      end