Same as a single update but for a group of entities sharing the same transaction (if any).
            
 Declaration Syntax
 Declaration Syntax Generic Template Parameters
 Generic Template Parameters- T
- Type of object to update.
 Parameters
 Parameters- objects (array< T >[]()[])
- Objects with a SpaceID defined.
- leaseTimes (array< Int64 >[]()[])
- The requested lease times of the updated enries, in milliseconds; 0 means retain the original lease.
 Return Value
 Return ValuePrevious value on successful update, null if object was written (not updated).
 Exceptions
 Exceptions| Exception | Condition | 
|---|---|
| EntryNotInSpaceException | An entry with matching ID does not exist in space. | 
| OperationTimeoutException | Timeout expired after waiting for a transactional proper matching entry (when using UpdateModifiers.UpdateOrWrite). | 
| UnusableEntryException | A serialized field of the object being read cannot be deserialized. | 
| TransactionException | Transaction error occured. | 
| UpdateMultiplePartialFailureException | Some of the entries failed to update (see exception's properties for more data). | 
| EntryVersionConflictException | Operation is rejected as a result of optimistic locking version conflict. | 
| InactiveSpaceException | The space is in backup mode and therefore is not active. | 
