You have been asked to design an elevator system. The functions of an elevator includes moving up and down, open and close doors, and pick up passengers. The elevator is supposed to be used in a building having floors numbered from 1to MaxFloor, where the first floor is the lobby. There are car call buttons in 5 hall call buttons for the passengers to call for going up and down. There is only one down hall call button at and the car lantern indicating the current direction the car is going is illuminated so that the passengers can get to know the current moving direction of the car. The car moves fast between floors, but it should be able to slow down early enough to stop at a desired floor. In order to certificate system safety, emergency 2 8 documented below to design the Elevator System