/// <summary>
///   Increments the value of the counter.
/// </summary>
///
/// <param name="incrementBy">The amount to increment.</param>
/// <exception cref="System.OverflowException">If the counter would overflow.</exception>
/// <returns>The new value of the counter.</returns>
///
/// <remarks>This method is threadsafe.</remarks>
public int Increment(int incrementBy = 1)
{
    int oldValue, newValue;
    do
    {
        oldValue = currentValue;
        newValue = oldValue + incrementBy;
        if (newValue < 0) throw new OverflowException("Counter value is out of range");
    }
    while (oldValue != Interlocked.CompareExchange(ref currentValue, newValue, oldValue));
    return newValue;
}