code: /*
   * 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.predictionio.annotation;
  
  import java.lang.annotation.*;
  
  /**
   * A lower-level, unstable API intended for developers.
   *
   * Developer API's might change or be removed in minor versions of Spark.
   *
   * NOTE: If there exists a Scaladoc comment that immediately precedes this
   * annotation, the first line of the comment must be ":: DeveloperApi ::" with
   * no trailing blank line. This is because of the known issue that Scaladoc
   * displays only either the annotation or the comment, whichever comes first.
   */
  @Retention(RetentionPolicy.RUNTIME)
  @Target({ElementType.TYPE, ElementType.FIELD, ElementType.METHOD,
          ElementType.PARAMETER, ElementType.CONSTRUCTOR, ElementType.LOCAL_VARIABLE,
          ElementType.PACKAGE})
  public @interface DeveloperApi {}
  