. Draw a UML class diagram showing the relationships between all of the following classes. You do not need to show any fields or methods. Class Person which has subclasses Professor, Student, and StaffMember Class Time Table which is something both Professor(s) and Student(s) have (weak has-a relationship) Classes PartTimeProfessor and FullTime Professor which are subclasses of Professor Class Library which is something a Student visits (uses) Class Course which is something all Time Table(s) have (strong has-a relationship) Use the following types of lines/arrows: a) For inheritance or generalization draw a solid line with an unfilled triangular arrowhead. b) For strong has-a draw a solid line that starts with a filled diamond. c) For weak has-a draw a solid line that starts with an unfilled diamond. d) For uses" draw a dashed line than ends with an open arrowhead