UseExperimental.java
/*
* Copyright 2019 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.annotation.experimental;
import static java.lang.annotation.ElementType.CONSTRUCTOR;
import static java.lang.annotation.ElementType.FIELD;
import static java.lang.annotation.ElementType.METHOD;
import static java.lang.annotation.ElementType.PACKAGE;
import static java.lang.annotation.ElementType.TYPE;
import static java.lang.annotation.RetentionPolicy.CLASS;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;
/**
* Allows use of an experimental API denoted by the given markers in the annotated file,
* declaration, or expression. If a declaration is annotated with {@link UseExperimental}, its
* usages are <strong>not</strong> required to opt-in to that experimental API.
*/
@Retention(CLASS)
@Target({TYPE, METHOD, CONSTRUCTOR, FIELD, PACKAGE})
public @interface UseExperimental {
/**
* Defines the experimental API whose usage this annotation allows.
*/
Class<?> markerClass();
}