$2.$ Consider a simple Library Management System described below:

$-$ The library system must keep track of when books are borrowed and returned.

$-$ The system must support librarian work $-$ keeping track of book borrowing and return.

$-$ The library is open to university staff and students.

$-$ University staff can borrow books.

$-$ Students can borrow books.

Design a UML use case diagram that represents the above system, identify all actors. At the very least your use case diagram should clearly show all actors $($stick figures$),$ the system, use cases or services that the system knows how to perform, and interaction$/$relationship between the elements of the system. Add sub$-$diagrams as necessary to show more details.