/*
 * Copyright 2015 Nicolas Morel
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.github.nmorel.gwtjackson.rest.api;

import com.google.gwt.http.client.Response;

/**
 * @author Nicolas Morel
 */
public abstract class RestCallback<T> {

    public void onSuccess(Response response, T result) {
        onSuccess(result);
    }

    public abstract void onSuccess(T result);

    public void onError(Response response) {
        onFailure(new RestException("An error occured. Status : " + response.getStatusCode()));
    }

    public void onFailure(Throwable throwable) {
        throw new RestException(throwable);
    }
}

@@ -682,16 +682,69 @@
 esponse;
+%0Aimport com.google.gwt.user.client.rpc.AsyncCallback;
 %0A%0A/**%0A *
@@ -807,16 +807,44 @@
 lback%3CT%3E
+ implements AsyncCallback%3CT%3E
  %7B%0A%0A    
@@ -934,55 +934,8 @@
  %7D%0A%0A
-    public abstract void onSuccess(T result);%0A%0A
     

Make RestCallback implements AsyncCallback