public void SendMessage(string to, string message)
{
if (LinphoneCore.IsNonZero())
{
IntPtr chat_room = ChatModule.linphone_core_get_chat_room_from_uri(LinphoneCore, to);
IntPtr chat_message = ChatModule.linphone_chat_room_create_message(chat_room, message);
ChatModule.linphone_chat_room_send_chat_message(chat_room, chat_message);
}
}