@Override
    public void increment() {
      getAndIncrement();
    }

    @Override
    public void add(long x) {
      getAndAdd(x);
    }

    @Override
    public long sum() {
      return get();
    }
  }

  private LongAddables() {}

   */
  @CanIgnoreReturnValue
  public long getAndIncrement(K key) {
    return getAndAdd(key, 1);
  }

  /**
   * Decrements by one the value currently associated with {@code key}, and returns the old value.
   */
  @CanIgnoreReturnValue
  public long getAndDecrement(K key) {
    return getAndAdd(key, -1);
  }

  /**

                break;
            } catch (final Exception e) {
                exception = new SuggesterException(e);
                scrollId = null;
            }
        }

        docCount.getAndAdd(queue.size());

        if (exception != null) {
            throw exception;
        }
    }

    /**
     * Calculates the limit document number based on total, percentage, and number.