Sitecore.FakeDb.Data.Engines.DataStorage.AssertDoesNotExists C# (CSharp) Méthode

    private void AssertDoesNotExists(DbItem item)
    {
      if (!this.FakeItems.ContainsKey(item.ID))
      {
        return;
      }

      var existingItem = this.FakeItems[item.ID];
      string message;

      if (existingItem is DbTemplate)
      {
        message = string.Format("A template with the same id has already been added ('{0}', '{1}').", item.ID, item.FullPath ?? item.Name);
      }
      else if (existingItem.GetType() == typeof(DbItem) && item is DbTemplate)
      {
        message = string.Format("Unable to create the item based on the template '{0}'. An item with the same id has already been added ('{1}').", item.ID, existingItem.FullPath);
      }
      else
      {
        message = string.Format("An item with the same id has already been added ('{0}', '{1}').", item.ID, item.FullPath);
      }

      throw new InvalidOperationException(message);
    }