Answer the following exercise taken from Ch5. Look carefully at how messages and mailboxes are represented in an email system that you use. Model the object classes that might be used in the system implementation to represent a mailbox and an e-mail message. Use figure 5.10 as an example (also found in Ch5 presentation slide #28).
You may use the link as a resource which includes PowerPoints from the Book.
https://software-engineering-book.com