render

# File actionpack/lib/action_dispatch/middleware/public_exceptions.rb, line 20
    def render(status, content_type, body)
      format = "to_#{content_type.to_sym}" if content_type
      if format && body.respond_to?(format)
        render_format(status, content_type, body.public_send(format))
      else
        render_html(status)
      end
    end