# File lib/asciidoctor/converter/docbook5.rb, line 344
    def preamble node
      if node.document.doctype == 'book'
        %(<preface#{common_attributes node.id, node.role, node.reftext}>
#{title_tag node, false}#{node.content}
</preface>)
      else
        node.content
      end
    end