codeql/java/ql/test/stubs/ratpack-1.9.x/ratpack/func/Nullable.java

/*
 * Copyright 2013 the original author or authors.
 *
 * Licensed 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 ratpack.func;

import java.lang.annotation.*;

/**
 * Denotes that something may be null.
 * <ul>
 * <li>On a <b>parameter</b>, denotes that it is valid to supply null as the value for the parameter.
 * <li>On a <b>method</b>, denotes that the method may return null.
 * <li>On a <b>field</b>, denotes that the field value may be null.
 * </ul>
 */
@Documented
@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.PARAMETER, ElementType.METHOD, ElementType.FIELD})
public @interface Nullable {
}