/// <summary>
/// Add following users
/// </summary>
/// <param name="ids">target users' ids</param>
public async Task AddFollowingsAsync(IEnumerable <long> ids)
{
var m = ids.Memoize();
lock (this._followingLocker)
{
m.ForEach(this._followings.Add);
}
await UserProxy.AddFollowingsAsync(_accountId, m);
m.ForEach(id => this.OnAccountDataUpdated(id, true, RelationDataChange.Following));
}
