code: public static String getNamedSection(final String sectionName) {
  		if (Util.empty(sectionName)) {
  			throw new IllegalArgumentException("argument must not be empty");
  		}
  		return SECTION_PREFIX.concat(sectionName);
  	}
docs: Get an {@code autocomplete} attribute value for a named auto-fill section.
  <p>
  For information on sections see
  <a href="https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#attr-fe-autocomplete-section" target="_blank">
  https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#attr-fe-autocomplete-section</a>. Note that in this use a section is
  <strong>not</strong> a HTML section element as provided by {@link com.github.bordertech.wcomponents.WSection}.
  </p>
  
  @param sectionName the name of the autocomplete section required
  @return an autocomplete value for a named section