# File lib/kafo_wizards/abstract_wizard.rb, line 89
    def check_required_entries(values)
      messages = entries.inject([]) do |messages, e|
        messages << "#{e.label} must be present" if e.required? && values[e.name].nil?
        messages
      end
      raise ValidationError.new(messages) unless messages.empty?
      values
    end