/**
 * GWT emulation for LongAddables.
 *
 * @author Louis Wasserman
 */
final class LongAddables {
  public static LongAddable create() {
    return new GwtLongAddable();
  }

  private static final class GwtLongAddable implements LongAddable {
    private long value;

    public void increment() {
      value++;
    }

    public void add(long x) {
      value += x;
    }