content: /*
   *  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.causeway.applib.annotation;
  
  import java.lang.annotation.ElementType;
  import java.lang.annotation.Inherited;
  import java.lang.annotation.Retention;
  import java.lang.annotation.RetentionPolicy;
  import java.lang.annotation.Target;
  
  /**
   * Indicates that a mixed-in action's parameter follows the parameters-as-tuple (PAT) semantics.
   * <p>
   * Example mixin code:
   * <pre>
   * // java record as a parameters tuple
   * record Params(@Parameter String key, &#64;Parameter String name) {}
   *
   * // mixin's main method using the tuple type
   * &#64;MemberSupport public Result act(&#64;ParameterTuple Params p) { ... }
   * </pre>
   *
   * @apiNote Java record support is planned for version 3.0
   *
   * @since 2.0 {@index}
   */
  @Inherited
  @Target({
          ElementType.PARAMETER,
          ElementType.ANNOTATION_TYPE
  })
  @Retention(RetentionPolicy.RUNTIME)
  public @interface ParameterTuple {
  }
  