CashNormal
+acceptCash : double
CashReturn
-moneyCondition；double-moneyReturn : double
+CashReturn:+acceptCash : double
CashRebate
-moneyRebate ；double
+CashRebate ：+acceptCash : double
CashContext
-cs ： CashSuper
+CashContext:+GetResult : double
CashSuper
+acceptCash: double
