code: public void setMaxItems(int max) {
          addField(ConfigureNodeFields.max_items, FormField.Type.text_single);
          setAnswer(ConfigureNodeFields.max_items.getFieldName(), max);
      }
docs: Set the maximum number of items to persisted to this node if {@link #isPersistItems()} is
  true.
  
  @param max The maximum number of items to persist