class ActiveAdmin::HasManyBuilder

def render(&block)
  html = "".html_safe
  html << template.content_tag(:h3, class: "has-many-fields-title") { heading } if heading.present?
  html << template.capture { content_has_many(&block) }
  html = wrap_div_or_li(html)
  template.concat(html) if template.output_buffer
  html
end