diff --git a/core/src/main/scala/org/apache/spark/annotation/Since.scala b/core/src/main/scala/org/apache/spark/annotation/Since.scala
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+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.apache.spark.annotation
+
+import scala.annotation.StaticAnnotation
+
+/**
+ * A Scala annotation that specifies the Spark version when a definition was added.
+ * Different from the `@since` tag in JavaDoc, this annotation does not require explicit JavaDoc and
+ * hence works for overridden methods that inherit API documentation directly from parents.
+ * The limitation is that it does not show up in the generated Java API documentation.
+ */
+private[spark] class Since(version: String) extends StaticAnnotation