android/perftests/utils/StateManager.java

/*
 * Copyright (C) 2018 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 android.perftests.utils;

import androidx.annotation.Nullable;

/**
 * Abstraction for a state that is managed somewhere, like Android Settings.
 */
public interface StateManager<T> {

    /**
     * Sets a new state.
     */
    void set(@Nullable T value);

    /**
     * Gets the current state.
     */
    @Nullable T get();
}