Question \# 7: UML - Sequence Diagram (5 marks) Consider the following scenario for searching for a book using an online library system. The Customer specifies an author on the Search Page. Then, the Search Page validates the customer entries. Affer validation, the Search Page searches the Catalog for books associated with the specified author. When the Search Results create the results, the results will be displayed on the Search Results Page. Alternative Sequence If the Customer presses the search button on the Search Page before entering the author details, the Search Page displays an error message and prompts the Customer to re-enter the author name