private void requestPlayerJoinAudioGroup(WonderlandClientSender sender,
WonderlandClientID clientID, String group, PresenceInfo caller,
PresenceInfo[] calleeList, ChatType chatType) {
VoiceChatMessage message = new VoiceChatJoinRequestMessage(group,
caller, getChatters(group), chatType);
logger.fine("Sending VoiceChatJoinRequestMessage to clientID " + clientID);
sender.send(clientID, message);
}