--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/langtools/src/jdk.compiler/share/classes/com/sun/tools/javac/util/DefinedBy.java	Wed Aug 27 07:44:00 2014 +0200
@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package com.sun.tools.javac.util;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**Methods that directly implement a method declared in a public, supported API should be marked
+ * with this annotation.
+ */
+@Target(ElementType.METHOD)
+@Retention(RetentionPolicy.SOURCE)
+public @interface DefinedBy {
+
+    /**The API which defines the implemented method.
+     */
+    Api value();
+
+    public enum Api {
+        ANNOTATION_PROCESSING("javax.annotation.processing"),
+        COMPILER("javax.tools"),
+        COMPILER_TREE("com.sun.source"),
+        LANGUAGE_MODEL("javax.lang.model");
+
+        /**The package under which all interfaces/classes of this API belong.
+         */
+        public final String packageRoot;
+
+        private Api(String packageRoot) {
+            this.packageRoot = packageRoot;
+        }
+
+    }
+}