SendMessageResults sendEndSessionMessage(Set<RecipientIdentifier.Single> recipients) throws IOException;
+ SendMessageResults sendMessageRequestResponse(
+ MessageEnvelope.Sync.MessageRequestResponse.Type type, Set<RecipientIdentifier> recipientIdentifiers
+ );
+
void hideRecipient(RecipientIdentifier.Single recipient);
void deleteRecipient(RecipientIdentifier.Single recipient);