public HasQuarterState(GumballMachine gumballMachine)
 {
     this.gumballMachine = gumballMachine;
 }
 public SoldState(GumballMachine gumballMachine)
 {
     this.gumballMachine = gumballMachine;
 }
 public WinnerState(GumballMachine gumballMachine)
 {
     this.gumballMachine = gumballMachine;
 }