Solve: Person Whisperer

Created By: Geoffrey Challen

/ Version: 2021.2.0

Define a method named whisper. whisper should accept a single Person instance and return a String?. If the person is:

• a Student you should return the result of calling hey()
• a Staff you should return the result of calling help()
• a Professor you should return the result of calling hello()
• otherwise return null.