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Class Diagram: Companies employ employees (who can only work for one company), and consist of one or more departments. Each company has a single president, who is an employee. Departments have employees as members and run projects (one or more.) Employees can work in 1 to 3 projects, while a project can have 2 to 50 assigned employees. You may assume that companies have a name and address, while employees have a emp# and a salary Draw a class diagram for the description above. Make sure to show attributes, multiplicities and aggregation associations, where appropriate. No need to show any operation:s