1/* 2 * Copyright (C) 2010 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 17package com.android.tools.layoutlib.annotations; 18 19import java.lang.annotation.Retention; 20import java.lang.annotation.RetentionPolicy; 21 22/** 23 * Denotes a parameter or field can be null. 24 * <p/> 25 * When decorating a method call parameter, this denotes the parameter can 26 * legitimately be null and the method will gracefully deal with it. Typically used 27 * on optional parameters. 28 * <p/> 29 * When decorating a method, this denotes the method might legitimately return null. 30 * <p/> 31 * This is a marker annotation and it has no specific attributes. 32 */ 33@Retention(RetentionPolicy.SOURCE) 34public @interface Nullable { 35} 36