# File lib/rdoc/require.rb, line 37
  def top_level
    @top_level ||= begin
      tl = RDoc::TopLevel.all_files_hash[name + '.rb']

      if tl.nil? and RDoc::TopLevel.all_files.first.full_name =~ %r(^lib/) then
        # second chance
        tl = RDoc::TopLevel.all_files_hash['lib/' + name + '.rb']
      end

      tl
    end
  end