EWS Managed API is missing a public interface to send messages in a batch

[TomWilloughby]

The Core/ExchangeService.cs class contains several public methods that allow performing an action on multiple items. For example, CreateItems, UpdateItems, CopyItems, etc.

Looking at the code for the internal SendItem method, SendItemRequest is also set up to perform the action on multiple items, but there is no public interface that would allow making the request with more than one item. Since SendItemRequest is also internal, it's not even possible to use the class directly to perform the request.

Is there a design decision behind the exclusing on a SendItems public method? If not would there be any objection to me adding the method in and submitting a pull requst?