package aceim.app.dataentity.listeners; import aceim.api.dataentity.Message; import aceim.api.dataentity.MessageAckState; public interface IHasMessages { public void onMessageReceived(Message message); public void onMessageAckReceived(long messageId, MessageAckState ack); public boolean hasMessagesOfBuddy(byte serviceId, String buddyProtocolUid); }