State (TP4 API)

All Known Implementing Classes:

BookingState
```
public interface State
```
Interface déclarant les opérations possibles du patron de conception état utilisé pour représenter les états possibles d'une réservation.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`cancel(Booking booking)`
`void`	`confirm(Booking booking)`
`void`	`pay(Booking booking)`

Method Detail

pay
```
void pay(Booking booking)
```

confirm
```
void confirm(Booking booking)
```

cancel
```
void cancel(Booking booking)
```