public Card GetCardByExternalId(string externalId)
{
if (IsPrefixEnabled && externalId.StartsWith(Prefix))
{
externalId = externalId.TrimStart(Prefix.ToCharArray());
}
CardView cardView = Lanes.SelectMany(lane => lane.Cards).FirstOrDefault(c => c.ExternalCardID == externalId);
if (cardView == null)
{
cardView = Backlog.SelectMany(lane => lane.Cards).FirstOrDefault(c => c.ExternalCardID == externalId);
}
if (cardView == null)
{
cardView = Archive.SelectMany(lane => lane.Cards).FirstOrDefault(c => c.ExternalCardID == externalId);
}
return(cardView == null ? null : cardView.ToCard());
}