content: /*
   * Copyright (C) 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 com.google.android.exoplayer2.util;
  
  import java.lang.annotation.ElementType;
  import java.lang.annotation.Retention;
  import java.lang.annotation.RetentionPolicy;
  import javax.annotation.Nonnull;
  import javax.annotation.meta.TypeQualifierDefault;
  import kotlin.annotations.jvm.MigrationStatus;
  import kotlin.annotations.jvm.UnderMigration;
  
  /**
   * Annotation to declare all type usages in the annotated instance as {@link Nonnull}, unless
   * explicitly marked with a nullable annotation.
   */
  @Nonnull
  @TypeQualifierDefault(ElementType.TYPE_USE)
  @UnderMigration(status = MigrationStatus.STRICT)
  @Retention(RetentionPolicy.CLASS)
  public @interface NonNullApi {}
  