public bool UnlikePhoto(int photoId)
{
var like = this._context.Likes.FirstOrDefault(x => x.PhotoId == photoId && x.LikerId == _userSessionService.GetCurrentUserID());
this._context.Likes.Remove(like);
this._context.SaveChanges();
return(DoesUserLikeThePhoto(this._userSessionService.GetCurrentUserID(), photoId));
}