Added JsonObject.getObject(String) method to complete helper API

com.eclipsesource.json/src/main/java/com/eclipsesource/json/JsonObject.java

@@ -561,6 +561,23 @@ public JsonValue get(String name) {
     return index != -1 ? values.get(index) : null;
   }
 
+  /**
+   * Returns the <code>JsonObject</code> value of the member with the specified name in this object. If
+   * this object does not contain a member with this name, null is returned. If
+   * this object contains multiple members with the given name, the last one will be picked. If this
+   * member's value does not represent a JSON number or if it cannot be interpreted as Java
+   * <code>int</code>, an exception is thrown.
+   *
+   * @param name
+   *          the name of the member whose value is to be returned
+   * @return the value of the last member with the specified name, or the given default value if
+   *         this object does not contain a member with that name
+   */
+  public JsonObject getObject(String name) {
+    JsonValue value = get(name);
+    return value != null ? value.asObject() : null;
+  }
+
   /**
    * Returns the <code>int</code> value of the member with the specified name in this object. If
    * this object does not contain a member with this name, the given default value is returned. If

com.eclipsesource.json/src/test/java/com/eclipsesource/json/JsonObject_Test.java

@@ -298,6 +298,22 @@ public void get_returnsLastValueForName() {
     assertEquals(Json.TRUE, object.get("foo"));
   }
 
+  @Test
+  public void get_object_returnsValueFromMember() {
+    JsonObject member = new JsonObject();
+    member.add("foo", "bar");
+
+    object.add("foo", member);
+
+    assertEquals("bar", object.getObject("foo").getString("foo",null));
+  }
+
+  @Test
+  public void get_object_returnsNullForMissingMember() {
+    assertNull(object.getObject("foo"));
+  }
+
+
   @Test
   public void get_int_returnsValueFromMember() {
     object.add("foo", 23);