code: public void startInsertAfter(String targetId)
              throws IOException {
          startChangesIfNecessary();
          inInsertAfter = true;
          ResponseWriter writer = getWrapped();
          writer.startElement("insert", null);
          writer.startElement("after", null);
          writer.writeAttribute("id", targetId, null);
          writer.startCDATA();
      }
docs: <p class="changed_added_2_0">Write the start of an insert operation
  where the contents will be inserted after the specified target node.</p>
  
  @param targetId ID of the node insertion should occur after
  @throws IOException if an input/output error occurs
  @since 2.0