public void ChangeGroupBuyingStatus()
{
var result = _client.ChangeGroupBuyingStatus(_groupId, 1882014);
result.ThrowIfException();
Assert.IsNull(result.Exception);
var result2 = _client.ChangeUserStatus(_groupId, _ownerId, 1882014);
result2.ThrowIfException();
Assert.IsNull(result2.Exception);
}