protected override Task OnUnprovisioningAsync()
{
var idsToRemove = ContentTypes
.Select(HarshContentTypeId.Get)
.ToArray();
foreach (var list in Lists)
{
list.ContentTypesEnabled = true;
list.Update();
var toRemove = list.ContentTypes
.Where(ct => ContainsContentType(idsToRemove, ct));
foreach (var ct in toRemove)
{
ct.DeleteObject();
}
}
return(ClientContext.ExecuteQueryAsync());
}