  return $enc;
      }

      # Otherwise, read it from a local file.
      else {
        if (-f $src) {
          open (READ, $src);
          binmode READ;
          my @bin = &lt;READ&gt;;
          close (READ);
          chomp @bin;

          my $enc = encode_base64(join(&quot;\n&quot;,@bin));
          return enc;
        }
      }
    }

    return undef;
  });</code></pre>

<p>On hyperlink resources, the module doesn&#39;t need or expect any return value. It should be up to the handler to do what 