/*
 * Copyright 2022 Google LLC
 *
 * 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.libraries.mobiledatadownload;

/**
 * Interface through which the SystemClock can be read.
 *
 * <p>This interface is analogous to {@code com.google.common.time.TimeSource#now#toEpochMilli}
 * without the dependency on Java8.
 */
public interface TimeSource {
  /** Returns the current system time in milliseconds since January 1, 1970 00:00:00 UTC. */
  long currentTimeMillis();
}