Scenаriо: The "Heliоs" Distributed Energy Grid Yоu аre designing the core logic for "Helios," а decentralized smart-grid energy trading platform. The system manages "Grid Nodes" (solar farms, batteries, etc.) using a generic Transaction Processor. Technical Constraints (Reference for all questions): GridNode (Abstract):String nodeID, double currentCapacity, abstract void performAudit(). Interfaces: Producible: double generateEnergy() Consumable: void drainEnergy(double amount) throws GridOverloadException Marketable: double calculateProfit(double pricePerKWh) TeslaMegapack: Extends GridNode, implements Producible AND Consumable. Transaction: Generic class with a nested static Timestamp class. Part B: Generics Nested Classes (15 Marks) Implement the TransactionT extends GridNode class. Requirements: It must possess a method void execute(T node) which calls performAudit() on the node. Inside this class, define a static nested class named Timestamp that generates a nanosecond-precision log time upon instantiation.