2. Prototype with the Sample App
               Want to see the Home APIs in action before you start building? Quickly create a prototype using the Android Sample App to learn key concepts, see code in action, and create the foundation for your integration. Start with the sample
  app.
            
          
        3. Start building
              When you are ready to start building, this roadmap guides you through the steps to integrate the Home APIs into your app. Each stage links to relevant technical documentation, giving you instant access to the info you need, when you need it.
            
          
        4. Integrate, test & launch
              Now that you've completed the essentials, let's get to the fun stuff.