@@ -0,0 +1,940 @@
+/*%0A * Copyright 2017 Google Inc. All Rights Reserved.%0A *%0A * Licensed under the Apache License, Version 2.0 (the %22License%22);%0A * you may not use this file except in compliance with the License.%0A * You may obtain a copy of the License at%0A *%0A *       http://www.apache.org/licenses/LICENSE-2.0%0A *%0A * Unless required by applicable law or agreed to in writing, software%0A * distributed under the License is distributed on an %22AS IS%22 BASIS,%0A * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.%0A * See the License for the specific language governing permissions and%0A * limitations under the License.%0A */%0A%0Apackage com.google.cloud;%0A%0Apublic class Tuple%3CX, Y%3E %7B%0A%0A  private final X x;%0A  private final Y y;%0A%0A  private Tuple(X x, Y y) %7B%0A    this.x = x;%0A    this.y = y;%0A  %7D%0A%0A  public static %3CX, Y%3E Tuple%3CX, Y%3E of(X x, Y y) %7B%0A    return new Tuple%3C%3E(x, y);%0A  %7D%0A%0A  public X x() %7B%0A    return x;%0A  %7D%0A%0A  public Y y() %7B%0A    return y;%0A  %7D%0A%7D%0A

make one Tuple class aross all the projects (#1992)