code: @TargetApi(Build.VERSION_CODES.GINGERBREAD)
      public static StorageManager getStorageManager(Context context) {
          return (StorageManager) context.getSystemService(Context.STORAGE_SERVICE);
      }
docs: Get the {@link android.os.storage.StorageManager} service for this context.
  @param context the context.
  @return the {@link android.os.storage.StorageManager}