/**
* Delivers the given number of pieces and returns the number of actualy delivered pieces.
*/
public void deliver(Reservable item, int count) {
item.remove(item.release(count));
}
/**
* Checks whether the given item is available.
*/
public int numAvail(Reservable item) {
return item.numAvail();
}
/**
* Releases the given number of pieces. Returns the number actually released pieces.
*/
public int release(Reservable item, int count) {
return item.release(count);
}
