shadows/framework/src/main/java/org/robolectric/shadows/ShadowUsageStatsManager.java
@Implementation(minSdk = Build.VERSION_CODES.P)
  @HiddenApi
  public @StandbyBuckets int getAppStandbyBucket(String packageName) {
    Integer bucket = appStandbyBuckets.get(packageName);
    return (bucket == null) ? UsageStatsManager.STANDBY_BUCKET_ACTIVE : bucket;
  }
@Implementation(minSdk = Build.VERSION_CODES.P)
  @HiddenApi
  public @StandbyBuckets int getAppStandbyBucket(String packageName) {
    Integer bucket = appStandbyBuckets.get(packageName);
    return (bucket == null) ? UsageStatsManager.STANDBY_BUCKET_ACTIVE : bucket;
  }
Returns the current standby bucket of the specified app that is set by {@code
setAppStandbyBucket}. If the standby bucket value has never been set, return {@link
UsageStatsManager.STANDBY_BUCKET_ACTIVE}.