private EraDescription GetEraDescription(Era era)
{
if (!eraDescriptions.TryGetValue(era, out EraDescription ret))
{
ret = EraDescription.ForEra(era, CultureInfo);
eraDescriptions[era] = ret;
}
return(ret);
}
private EraDescription GetEraDescription(Era era) => eraDescriptions.GetOrAdd(era, key => EraDescription.ForEra(key, CultureInfo));
