/// <summary>
/// Compares two opening times for equality.
/// </summary>
/// <param name="OpeningTimes">An opening time to compare with.</param>
/// <returns>True if both match; False otherwise.</returns>
public Boolean Equals(OpeningTime OpeningTimes)
=> Periods.Count().Equals(OpeningTimes.Periods.Count()) &&
Periods.All(period => OpeningTimes.Periods.Contains(period)) &&
On.Equals(OpeningTimes.On) &&
((!UnstructuredText.IsNullOrEmpty() && !OpeningTimes.UnstructuredText.IsNullOrEmpty()) ||
(UnstructuredText.IsNullOrEmpty() && OpeningTimes.UnstructuredText.IsNullOrEmpty() && UnstructuredText.Equals(OpeningTimes.UnstructuredText)));