@Override
    public FloatVectorValues getFloatVectorValues(String s) throws IOException {
        //TODO figure out how to implement this... if needed
        return null;
    }
This method is sugar for getting an {@link LeafReader} from
an {@link IndexReader} of any kind. If the reader is already atomic,
it is returned unchanged, otherwise wrapped by this class.
tika-eval/tika-eval-app/src/main/java/org/apache/tika/eval/app/tools/SlowCompositeReaderWrapper.java