Joe Programmer has finished his research on the latest super-efficient data structure for storing a collection, and is now implementing the data structure for the Java library, in a class named RapidEx. Since the data structure is complex, he wants to provide a mechanism for client classes to easily traverse the collection. Accordingly, he has provided the following public methods for RapidEx: (I)start Traversal:bool. (2)has More:bool. (3)stepForward:bool. and (4)getNext:Object. What do you think of Joe's idea? Explain your response in full detail