| DeleteItems(IEnumerable<ItemId>, DeleteMode, Nullable<SendCancellationsMode>, Nullable<AffectedTaskOccurrence>) | Deletes multiple items in a single call to EWS. |
| DeleteItems(IEnumerable<ItemId>, DeleteMode, Nullable<SendCancellationsMode>, Nullable<AffectedTaskOccurrence>, Boolean, CancellationToken) | Deletes multiple items in a single call to EWS. |