module Cucumber::Core::Gherkin::Writer::HasElements::HasElementBuilders

def element(name)
  define_method(name) do |*args, &source|
    factory_name = String(name).split('_').map(&:capitalize).join
    factory = Writer.const_get(factory_name)
    factory.new(slurp_comments, *args).tap do |builder|
      builder.instance_exec(&source) if source
      elements << builder
    end
    self
  end
end

def elements(*names)
  names.each { |name| element(name) }
end