docs: @Override
      public void getResult(final ContentHandler buf) throws SAXException {
          for (final Value value: valueSet) {
              final URI href = getHref(value);
              buf.startElement("http://www.w3.org/1999/XSL/Transform", "import", "xsl:import", new AttributesBuilder()
                  .add("href", href.toString())
                  .build());
              buf.endElement("http://www.w3.org/1999/XSL/Transform", "import", "xsl:import");
          }
      }