content: /*
   * Copyright (C) 2017 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 androidx.test.internal.runner.tracker;
  
  import static androidx.test.internal.util.Checks.checkNotNull;
  
  /**
   * A registry to hold the global {@link UsageTracker}.
   *
   * <p>Instrumentation will configure this registry at startup.
   *
   * @deprecated obsolete
   */
  @Deprecated
  public final class UsageTrackerRegistry {
  
    /**
     * Contains versions for AXT libraries
     *
     * @deprecated obsolete
     */
    @Deprecated
    public interface AxtVersions {
      // Espresso version includes: Espresso, Espresso-Web, Intents, Espresso-MPE
      String ESPRESSO_VERSION = "na";
      // Runner version includes: Runner
      String RUNNER_VERSION = "na";
      // Test services version.
      String SERVICES_VERSION = "na";
    }
  
    // By default we use a NoOp class.
    private static volatile UsageTracker instance = new UsageTracker.NoOpUsageTracker();
  
    public static void registerInstance(UsageTracker tracker) {
      instance = checkNotNull(tracker);
    }
  
    public static UsageTracker getInstance() {
      return instance;
    }
  
    private UsageTrackerRegistry() {}
  }
  