public static async Task AddMetadataAsync(this List <Post> posts, IMetadataService metadataService)
{
var meta = await metadataService.GetAsync(posts.Select(s => s.Id));
posts.ForEach(p => p.PostMeta = meta.Where(w => w.PostId == p.Id).ToList());
//foreach (var post in posts)
//{
// post.PostMeta = meta.Where(w => w.PostId == post.Id).ToList();
//}
}
public static async Task AddMetadataAsync(this Post post, IMetadataService metadataService) => post.PostMeta = await metadataService.GetAsync(post.Id);