When comparing String concatenation with the StringBuilder class we concluded that StringBuilder must store the string as a linked list of chars. However, our textbook states that StringBuilder stores the string in a dynamic array (like ArrayBag). Write the syntatically correct Java code for an experimental test using System.currentTimeMillis( ) that will allow you to determine if StringBuilder stores the chars in a linked list or in a dynamic array. If necessary, your Java code can import the StringBuilder class, the SinglyLinkedList class, and/or the ArrayBag class.