CanvasServiceAsync.java

package com.project.website.canvas.shared.contracts;

import com.google.gwt.user.client.rpc.AsyncCallback;
import com.project.website.canvas.shared.data.CanvasPage;

public interface CanvasServiceAsync {

    void savePage(CanvasPage page, AsyncCallback<CanvasPage> callback);

    void getPage(long id, AsyncCallback<CanvasPage> callback);

}