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: converter.rb
    path of file: ./repos/truffleruby/bench/asciidoctor/asciidoctor/lib/asciidoctor
    
    the code of the file until where you have to start completion: # encoding: UTF-8
module Asciidoctor
  # A base module for defining converters that can be used to convert {AbstractNode}
  # objects in a parsed A
    
      def register_for *backends
        Factory.register self, backends
        metaclass = class << self; self; end
        if backends == ['*']
          metaclass.send :define_method, :converts? do |name|
            true
          end
        else
          metaclass.send :define_method, :converts? do |name|
            backends.include? name
          end
        end