Instructions for the lab: First, make sure you understand what a ring is. You may think of it as an array if you like. Design an ADT for this ring. - In particular: Plan and design four operations (methods) for the ring: advance, getCurrent, add, remove. This means that, for each method, you have to decide on the method type as well as input parameters. Then, write the method header for each operation. - After you have completed the design, write JavaDoc for these operations, following the JavaDoc example in the PowerPoint for Chapter 1. You do not have to write the interface or any code beyond the method headers