draw a class diagram for a university and its classrooms, offices and departments

Define a class diagram for a university. In a university there are different classrooms, offices and departments. A department has a name and it contains many offices. A person working at the university has a unique ID and can be a professor or an employee.

• A professor can be a full, associate or assistant professor and he/she is enrolled in one department.
• Offices and classrooms have a number ID, and a classroom has a number of seats.
• Every Employee works in an office.