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      1 /*
      2  * Copyright (C) 2017 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 package android.annotation;
     17 
     18 import java.lang.annotation.Documented;
     19 import java.lang.annotation.Retention;
     20 import java.lang.annotation.Target;
     21 
     22 import static java.lang.annotation.ElementType.FIELD;
     23 import static java.lang.annotation.ElementType.METHOD;
     24 import static java.lang.annotation.ElementType.PARAMETER;
     25 import static java.lang.annotation.RetentionPolicy.SOURCE;
     26 
     27 /**
     28  * Denotes that an integer parameter, field or method return value is expected
     29  * to be a navigation resource reference (e.g. {@code R.navigation.flow}).
     30  *
     31  * {@hide}
     32  */
     33 @Documented
     34 @Retention(SOURCE)
     35 @Target({METHOD, PARAMETER, FIELD})
     36 public @interface NavigationRes {
     37 }
     38