public static Topic Create(string name, string summary, DateTime expiredDate)
{
Topic topic = new Topic();
topic.Name = name;
topic.Summary = summary;
topic.ExpiredDate = expiredDate;
return topic;
}
public Post(Topic topic, User author, string content)
{
this.topic = topic;
this.author = author;
this.content = content;
}
public static Post Create(Topic topic, User author, string content)
{
return new Post(topic, author, content);
}