code: @Nullable
    public IMicroDocument parseXHTMLDocument (@Nullable final String sXHTML)
    {
      return MicroReader.readMicroXML (sXHTML,
                                       m_aAdditionalSAXReaderSettings.getClone ()
                                                                     .setEntityResolver (HTMLEntityResolver.getInstance ()));
    }
docs: This method parses a full HTML document into a {@link IMicroDocument} using
  the additional SAX reader settings and always the
  {@link HTMLEntityResolver} as an entity resolver.
  
  @param sXHTML
  The complete XHTML document as a string. May be <code>null</code>.
  @return <code>null</code> if interpretation failed