private static IEnumerable<string> GetPostCategories(GhostData ghostData, GhostPost post)
 {
     var postCategoryIds = ghostData.data.posts_tags.Where(t => t.post_id == post.id).Select(c => c.tag_id).ToList();
     return postCategoryIds.Select(id => ghostData.data.tags.FirstOrDefault(t => t.id == id).name).ToArray();
 }
 private static string GetPostAuthor(GhostData ghostData, GhostPost post)
 {
     return ghostData.data.users.FirstOrDefault(u => u.id == post.created_by).name;
 }