def multi_input_form_group(f, methods, options = {})
      gopt, lopt, fopt = split_form_group_options(options)
      lopt[:text] ||= gopt[:label]
      if lopt[:text].blank?
        lopt[:text] = methods.map {|k,_| k.to_s.humanize }.join(', ')
      end
      lbl = f.label_with_small methods.map{|k,_| k}.first, lopt[:text], lopt
      fld = gopt[:wrap].call(multi_input_field(f, methods, fopt))
      form_group lbl, fld, gopt
    end
def multi_input_form_group(f, methods, options = {})
      gopt, lopt, fopt = split_form_group_options(options)
      lopt[:text] ||= gopt[:label]
      if lopt[:text].blank?
        lopt[:text] = methods.map {|k,_| k.to_s.humanize }.join(', ')
      end
      lbl = f.label_with_small methods.map{|k,_| k}.first, lopt[:text], lopt
      fld = gopt[:wrap].call(multi_input_field(f, methods, fopt))
      form_group lbl, fld, gopt
    end
Creates a form group including a label and a multiple input field.

 To specify a label, set the +label_text+ option, otherwise the method name will be used.
 Prefix field options with +field_+ and label options with +label_+.
 Any additional options are passed to the form group.