/// <summary>
        /// Updates a given entity in the database.
        /// </summary>
        /// <param name="item">The modified entity.</param>
        public virtual void Update(T item)
        {
            using (var ctx = new LibraryDBContext())
            {
                var dbSet = ctx.Set <T>();
                dbSet.Attach(item);
                ctx.Entry(item).State = EntityState.Modified;

                ctx.SaveChanges();

                Log.Info("Entity of type " + item.GetType().ToString() + " have been successfully updated!");
            }
        }
        /// <summary>
        /// Deletes a given entity from the database.
        /// </summary>
        /// <param name="entityToDelete">The entity to delete.</param>
        public virtual void Delete(T entityToDelete)
        {
            using (var ctx = new LibraryDBContext())
            {
                var dbSet = ctx.Set <T>();

                if (ctx.Entry(entityToDelete).State == EntityState.Detached)
                {
                    dbSet.Attach(entityToDelete);
                }

                dbSet.Remove(entityToDelete);

                ctx.SaveChanges();

                Log.Info("Entity of type " + entityToDelete.GetType().ToString() + " have been successfully deleted!");
            }
        }