 <li><code>toJson</code>: serialize Java objects content tree to JSON input
 </ul>

 <p>Instance of this class is created using <a href="../../../javax/json/bind/JsonbBuilder.html" title="interface in javax.json.bind"><code>JsonbBuilder</code></a>
 builder methods:</p>
 <pre><code>
 // Example 1 - Creating Jsonb using default JsonbBuilder instance provided by default JsonbProvider
 Jsonb jsonb = JsonbBuilder.create();

 // Example 2 - Creating Jsonb instance for a specific provider specified by a class name