+ /**
+ * Used by serializable objects to parse themselves. These methods should
+ * generally not be used directory for deserialization. This one returns
+ * the next object in the queue which has been parsed. This method may
+ * block if more data is pending and an object has not bee constructed yet.
+ * The caller takes ownership of the object which has been allocated with
+ * the new operator and must therefore be sure to delete the object as
+ * appropriated. Null (0) will be returned by this method to signify one of
+ * three things: 1) the end of an array, 2) the end of a map/dictionary, or
+ * 3) there is nothing more to be obtained. Container objects will be empty
+ * and will have to be filled with their contained elements by repeatedly
+ * calling this method until a null is returned. This method will continue
+ * to return the same value until pop() is called which will cause this
+ * method to return the next object as expected.
+ */
+