NullableType.java
/*
* Copyright 2023 The Android Open Source Project
*
* 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 androidx.media3.common.util;
import java.lang.annotation.Documented;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import javax.annotation.Nonnull;
import javax.annotation.meta.TypeQualifierNickname;
import javax.annotation.meta.When;
/**
* Annotation for specifying a nullable type.
*
* <p>Unlike {@link androidx.annotation.Nullable} used elsewhere in the library, this annotation can
* be used on {@link ElementType#TYPE_USE} locations like generic type parameters and array element
* types.
*/
@UnstableApi
@Documented
@Retention(RetentionPolicy.CLASS)
@Nonnull(when = When.MAYBE)
@Target({ElementType.TYPE_USE})
@TypeQualifierNickname
public @interface NullableType {}