Added close method, #108

Author: Olivier Cailloux

api/src/main/java/javax/json/bind/Jsonb.java

@@ -95,12 +95,6 @@
  *
  * <p>All the methods in this class are safe for use by multiple concurrent threads.</p>
  *
- * <p>Calling {@code Closable.close()} method will cleanup all CDI managed components
- * (such as adapters with CDI dependencies) created during interaction with Jsonb.
- * Calling {@code close()} must be done after all threads has finished interaction with Jsonb.
- * If there are remaining threads working with Jsonb and {@code close()} is called, behaviour is undefined.
- * </p>
- *
  * @see Jsonb
  * @see JsonbBuilder
  * @see java.util.ServiceLoader
@@ -354,4 +348,17 @@ public interface Jsonb extends AutoCloseable {
      * @since JSON Binding 1.0
      */
     void toJson(Object object, Type runtimeType, OutputStream stream) throws JsonbException;
+    
+    /**
+     * Closes this resource, relinquishing any underlying resources. In particular,
+     * cleans up all CDI managed components (such as adapters with CDI dependencies)
+     * created during interaction with Jsonb. {@code close()} must be called after
+     * all threads have finished interaction with Jsonb. If there are remaining
+     * threads working with Jsonb after {@code close()} has been called, behaviour
+     * is undefined.
+     *
+     * @throws JsonbException If any unexpected problem occurs during the close.
+     */
+    @Override
+    void close() throws JsonbException;
 }