code: public void addMissingNodeFactoryError(final String type) throws ValidationException
      {
          addError(StringFormatter.format(MessageConstants.MESSAGES.missingNodeFactory(), type));
      }
docs: Calls {@link #addError(String)} with a message that indicates
  that there is no NodeFactory for the given Node or Shape type.
  <p>
  If you're writing your own Node class, you may need to register the
  type in {@link FactoryRegistry}.
  
  @param type Node or Shape type
  @throws ValidationException