protected static int?GetATCID(int accountTypeID)
{
int?result = null;
int val;
if (!atcidCache.TryGetValue(accountTypeID, out val))
{
result = InternalGetATCID(accountTypeID);
if (result.HasValue)
{
atcidCache.AddOrUpdate(accountTypeID, result.Value);
}
}
else
{
result = val;
}
return(result);
}