/// <summary>
/// https://stackoverflow.com/questions/323314/best-way-to-convert-pascal-case-to-a-sentence
/// </summary>
public static string ToFriendlyString(string st)
{
Precondition.ArgumentNotNull(st, nameof(st));
return(Regex.Replace(st, "[a-z][A-Z]", m => $"{m.Value[0]} {char.ToLower(m.Value[1])}"));
}