title: Firebase java object serialization and Inheritance
body: <p>Does it also serialize inherited properties?</p>
  
  <pre><code>@IgnoreExtraProperties
  public class Item extend BaseObservable {
      private String foo;
  
      public Item() { }
  
      @Bindable
      public String getFoo() {
          return this.foo;
      }
  }
  </code></pre>