@@ -0,0 +1,1912 @@
+/*%0A * Licensed to the Apache Software Foundation (ASF) under one or more%0A * contributor license agreements.  See the NOTICE file distributed with%0A * this work for additional information regarding copyright ownership.%0A * The ASF licenses this file to You under the Apache License, Version 2.0%0A * (the %22License%22); you may not use this file except in compliance with%0A * the License.  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 org.apache.spark.annotation;%0A%0Aimport java.lang.annotation.ElementType;%0Aimport java.lang.annotation.Retention;%0Aimport java.lang.annotation.RetentionPolicy;%0Aimport java.lang.annotation.Target;%0A%0A/**%0A * A class that is considered private to the internals of Spark -- there is a high-likelihood%0A * they will be changed in future versions of Spark.%0A *%0A * This should be used only when the standard Scala / Java means of protecting classes are%0A * insufficient.  In particular, Java has no equivalent of private%5Bspark%5D, so we use this annotation%0A * in its place.%0A *%0A * NOTE: If there exists a Scaladoc comment that immediately precedes this annotation, the first%0A * line of the comment must be %22:: Private ::%22 with no trailing blank line. This is because%0A * of the known issue that Scaladoc displays only either the annotation or the comment, whichever%0A * comes first.%0A */%0A@Retention(RetentionPolicy.RUNTIME)%0A@Target(%7BElementType.TYPE, ElementType.FIELD, ElementType.METHOD, ElementType.PARAMETER,%0A        ElementType.CONSTRUCTOR, ElementType.LOCAL_VARIABLE, ElementType.PACKAGE%7D)%0Apublic @interface Private %7B%7D%0A

Add `Private` annotation.