public void Add(HistoryItem historyItem)
{
if (historyItem.Id == null)
{
historyItem.Id = Guid.NewGuid().ToString("B");
}
historyItem.CreationDate = DateTime.UtcNow;
using (var dbContext = new MedialynxDbHistoryContext()) {
dbContext.HistoryItems.Add(historyItem);
dbContext.SaveChanges();
}
}