Splitting Roda routes between files

app.rb

require_relative 'green'

class App < Roda
  route do |r|
    r.root do
      raise
      'root'
    end

    r.on 'green' do
      r.run Green
    end
  end
end

green.rb

class Green < Roda
  route do |r|
    r.is do
      'green root'
    end
  end
end