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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one
3    * or more contributor license agreements.  See the NOTICE file
4    * distributed with this work for additional information
5    * regarding copyright ownership.  The ASF licenses this file
6    * to you under the Apache License, Version 2.0 (the
7    * "License"); you may not use this file except in compliance
8    * with the License.  You may obtain a copy of the License at
9    *
10   *   http://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing,
13   * software distributed under the License is distributed on an
14   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   * KIND, either express or implied.  See the License for the
16   * specific language governing permissions and limitations
17   * under the License.
18   */
19  package org.apache.maven.api.annotations;
20  
21  import java.lang.annotation.Documented;
22  import java.lang.annotation.ElementType;
23  import java.lang.annotation.Retention;
24  import java.lang.annotation.RetentionPolicy;
25  import java.lang.annotation.Target;
26  
27  /**
28   * The annotated element must not be null.
29   * <p>
30   * Annotated fields must not be null after construction has completed.
31   * <p>
32   * When this annotation is applied to a method it applies to the method return value.
33   *
34   * @see Nullable
35   * @since 4.0
36   */
37  @Experimental
38  @Documented
39  @Retention(RetentionPolicy.CLASS)
40  @Target({ElementType.FIELD, ElementType.PARAMETER, ElementType.METHOD})
41  public @interface Nonnull {}