anchor.diff:  
   ==== Html5ConverterExtensions in more detail
   
  -[code, ruby]
  +[source, ruby]
   ----
   module Html5ConverterExtensions
   
  
positive.code: and `class Converter`.  Let us examine these
  in ever greater detail.
  
  [code, ruby]
  ----
  
  module Asciidoctor::LaTeX
  
negative.code: existing Html5Converter for {adp}.  It does
  this via Ruby 2.0's `prepend` method:
  
  [source, Ruby]
  ----
  class Asciidoctor::Converter::Html5Converter
    # inject our custom code into the
  