after.rb

  def normalized_content_from_content
    if client
      options = {
        blacklisted_elements: client.article_blacklisted_elements,
        whitelisted_tags: client.article_whitelisted_tags,
      }
    else
      options = nil
    end
    ContentNormalization.new(content, options).normalized_content if content
  end

before.rb

  def normalized_content_from_content
    options = {
      blacklisted_elements: client.article_blacklisted_elements,
      whitelisted_tags: client.article_whitelisted_tags,
    }
    ContentNormalization.new(content, options).normalized_content
  end