/// <summary> Aggregate number groups. </summary> /// <remarks> Sander.struijk, 26.02.2014. </remarks> /// <param name="countryCode"> The country code. </param> /// <returns> The phone number. </returns> private string AggregateNumberGroups(string countryCode) { return(NumberGroups.Aggregate(countryCode, (current, next) => string.Format("{0} {1}", current, next))); }