/**
* @param User $User
* @param int $title
* @param int $content
* @param array $tags
* @return Post
*/
public function createPost(User $User, $title, $content, array $tags = [])
{
$Post = new Post();
$Post->set(Post::FIELD_USER_OWNER, $User);
$Post->set(Post::FIELD_TITLE, $title);
$Post->set(Post::FIELD_CONTENT, $content);
$Post->set(Post::FIELD_TAGS, $tags);
$Post->set(Post::FIELD_CREATE_AT, Time::getTime());
$Post->save();
$FeedProvider = $this->getFeedProvider();
$FeedProvider->getFeed(FeedType::MAIN)->savePost($Post);
$FeedProvider->getFeed(FeedType::USER)->savePost($Post);
$FeedProvider->getFeed(FeedType::TAG)->savePost($Post);
return $Post;
}