public SampleRepository() { if (!Authors.Any()) { var author1CreateResult = Author.CreateAuthor(0, "PALASH", "DEBNATH"); if (author1CreateResult.IsSuccess) { Authors.Add(author1CreateResult.Value); } var author2CreateResult = Author.CreateAuthor(1, "PRITAM", "DEBNATH"); if (author2CreateResult.IsSuccess) { Authors.Add(author2CreateResult.Value); } if (!Posts.Any()) { var blogPost1CreateResult = BlogPost.CreateBlogPost( 1, "Mastering C#", "This is a series of articles on C#.", author1CreateResult.Value); if (blogPost1CreateResult.IsSuccess) { Posts.Add(blogPost1CreateResult.Value); } var blogPost2CreateResult = BlogPost.CreateBlogPost( 2, "Mastering Mechanical Engineering", "This is a series of articles on Mechanical Engineering", author2CreateResult.Value); if (blogPost2CreateResult.IsSuccess) { Posts.Add(blogPost2CreateResult.Value); } } } }