code: @Override
    public void setProperty(String name, Object value)
    {
      switch(name) {
      case "js.template.serialize.prolog":
        serializeProlog = (Boolean)value;
        break;
  
      case "js.template.serialize.operator":
        serializeOperators = (Boolean)value;
        break;
      }
    }
docs: Set template instance properties overriding the template engine ones. Current implementation deals with
  <code>js.template.serialize.prolog</code> and <code>js.template.serialize.operator</code> flags.
  <p>
  First is used to disable prolog serialization. By default prolog serialization is enabled, see
  {@link #serializeProlog}. Use this property to disable it, that to not include XML prolog, respective X(H)MTL
  DOCTYPE, into serialization output.
  <p>
  The second property is used to control operators serialization. By default, templates operators are not included
  into resulting document. If one may want to include operators, perhaps in order to enable data extraction, uses
  this method. But be warned that if document is validated operators syntax may collide with document grammar and
  render document invalid.
  
  @param name property name,
  @param value property value.