# File lib/maruku/output/to_html.rb, line 705
        def to_html_link
                a =  wrap_as_element 'a'
                id = self.ref_id
                
                if ref = @doc.refs[id]
                        url = ref[:url]
                        title = ref[:title]
                        a.attributes['href'] = url if url
                        a.attributes['title'] = title if title
                else
                        maruku_error "Could not find ref_id = #{id.inspect} for #{self.inspect}\n"+
                                "Available refs are #{@doc.refs.keys.inspect}"
                        tell_user "Not creating a link for ref_id = #{id.inspect}."
                        return wrap_as_element('span')
                end

#               add_class_to_link(a)
                return a
        end