public void delete(Transaction transaction, Iterable<Key> keys) {
		datastore.delete(transaction, keys);
	}
public void delete ( Transaction transaction , Iterable < Key > keys ) { datastore . delete ( transaction , keys ) ; }
Deletes entities corresponding to the specified {@code Key}s from App
Engine Datastore within the specified {@code Transaction}.

@param transaction The transaction to delete entities.
@param keys The {@code Key}s corresponding to the entities to be deleted.