NearbyConnectionsWalkieTalkie/app/src/main/java/com/google/location/nearby/apps/walkietalkie/ConnectionsActivity.java [519:527]:
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  public static boolean hasPermissions(Context context, String... permissions) {
    for (String permission : permissions) {
      if (ContextCompat.checkSelfPermission(context, permission)
          != PackageManager.PERMISSION_GRANTED) {
        return false;
      }
    }
    return true;
  }
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NearbyConnectionsRockPaperScissors/app/src/main/java/com/google/location/nearby/apps/rockpaperscissors/MainActivity.java [192:200]:
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  private static boolean hasPermissions(Context context, String... permissions) {
    for (String permission : permissions) {
      if (ContextCompat.checkSelfPermission(context, permission)
          != PackageManager.PERMISSION_GRANTED) {
        return false;
      }
    }
    return true;
  }
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