public virtual async Task UpdateAsync(BlogPost blogPost)
{
await CheckBlogExistenceAsync(blogPost.BlogId);
await BlogPostRepository.UpdateAsync(blogPost);
}
public async Task SetSlugUrlAsync(BlogPost blogPost, string newSlug)
{
await CheckSlugExistenceAsync(blogPost.BlogId, newSlug);
blogPost.SetSlug(newSlug);
}