code: def to_absolute(link)
        link    = link.to_s
        new_url = begin
                    url.merge(link)
                  rescue Exception
                    return
                  end
  
        if (!new_url.opaque) && (path = new_url.path)
          # ensure that paths begin with a leading '/' for URI::FTP
          if (new_url.scheme == 'ftp' && !path.start_with?('/'))
            path.insert(0,'/')
          end
  
          # make sure the path does not contain any .. or . directories,
          # since URI::Generic#merge cannot normalize paths such as
          # "/stuff/../"
          new_url.path = URI.expand_path(path)
        end
  
        return new_url
      end
docs: Normalizes and expands a given link into a proper URI.
  
   @param [String] link
     The link to normalize and expand.
  
   @return [URI::HTTP]
     The normalized URI.