void sendGroupMessage(String message, List<String> attachments, byte[] groupId) throws EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException, IOException;
+ String getContactName(String number);
+
+ void setContactName(String number, String name);
+
+ String getGroupName(byte[] groupId);
+
+ List<String> getGroupMembers(byte[] groupId);
+
+ byte[] updateGroup(byte[] groupId, String name, List<String> members, String avatar) throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException;
+
class MessageReceived extends DBusSignal {
private long timestamp;
private String sender;