def formSectionHasBeenAdded(section, atIndex: index)
      super
      action = @form_builder.get_callback(section, :on_add)
      return if action.nil?
      trigger_action(action, row, index_path)
    end
def formSectionHasBeenAdded(section, atIndex: index)
      super
      action = @form_builder.get_callback(section, :on_add)
      return if action.nil?
      trigger_action(action, row, index_path)
    end
XLFormDescriptorDelegate