1 /* 2 * Copyright 2025 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package androidx.annotation.keep 18 19 /** 20 * Used to define an unspecified class value in the Keep annotations. 21 * 22 * For example, when a method return class isn't important to specify in 23 * [GenerateKeepForMethod.returnClass], it defaults to `Unspecified::class`, which signifies that 24 * any class is accepted. 25 * 26 * This is used as `null` cannot be used as a default in annotations. 27 */ 28 public class Unspecified 29