@Nullable
  Bitmap getScreenshot(String name) throws IOException {
    if (getScreenshotFile(name) == null) {
      return null;
    }
    return BitmapFactory.decodeFile(getScreenshotFile(name).getAbsolutePath());
  }
Returns the stored screenshot in the album, or null if no such test case exists.
core/src/main/java/com/facebook/testing/screenshot/internal/AlbumImpl.java