public GenericDeletedAction(IElementsContainer <T> container, T deletedItem)
{
_container = container;
_deletedItem = deletedItem;
Name = $"Element deleted to {_container.GetType()}";
}
public GenericAddedAction(IElementsContainer <T> container, T addedItem)
{
_container = container;
_addedItem = addedItem;
Name = $"Element added to {_container.GetType()}";
}