Adding @IssueKey annotation

processor/src/test/java/org/mapstruct/ap/testutil/IssueKey.java

@@ -0,0 +1,30 @@
+/**
+ *  Copyright 2012-2013 Gunnar Morling (http://www.gunnarmorling.de/)
+ *
+ *  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 org.mapstruct.ap.testutil;
+
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+
+/**
+ * Id of the issue addressed by a test or test method in the <a
+ * href="https://github.com/mapstruct/mapstruct/issues">issue tracker</a>.
+ *
+ * @author Gunnar Morling
+ */
+@Retention(RetentionPolicy.SOURCE)
+public @interface IssueKey {
+    String value();
+}