src/main/java/org/opensearch/knn/index/codec/KNN86Codec/KNN86Codec.java [65:126]:
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    @Override
    public DocValuesFormat docValuesFormat() {
        return this.perFieldDocValuesFormat;
    }

    /*
     * For all the below functions, we could have extended FilterCodec, but this brings
     * SPI related issues while loading Codec in the tests. So fall back to traditional
     * approach of manually overriding.
     */


    public void setPostingsFormat(PostingsFormat postingsFormat) {
        this.postingsFormat = postingsFormat;
    }

    @Override
    public PostingsFormat postingsFormat() {
        if (this.postingsFormat == null) {
            return getDelegatee().postingsFormat();
        }
        return this.postingsFormat;
    }

    @Override
    public StoredFieldsFormat storedFieldsFormat() {
        return getDelegatee().storedFieldsFormat();
    }

    @Override
    public TermVectorsFormat termVectorsFormat() {
        return getDelegatee().termVectorsFormat();
    }

    @Override
    public FieldInfosFormat fieldInfosFormat() {
        return getDelegatee().fieldInfosFormat();
    }

    @Override
    public SegmentInfoFormat segmentInfoFormat() {
        return getDelegatee().segmentInfoFormat();
    }

    @Override
    public NormsFormat normsFormat() {
        return getDelegatee().normsFormat();
    }

    @Override
    public LiveDocsFormat liveDocsFormat() {
        return getDelegatee().liveDocsFormat();
    }

    @Override
    public CompoundFormat compoundFormat() {
        return this.compoundFormat;
    }

    @Override
    public PointsFormat pointsFormat() {
        return getDelegatee().pointsFormat();
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src/main/java/org/opensearch/knn/index/codec/KNN87Codec/KNN87Codec.java [65:126]:
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    @Override
    public DocValuesFormat docValuesFormat() {
        return this.perFieldDocValuesFormat;
    }

    /*
     * For all the below functions, we could have extended FilterCodec, but this brings
     * SPI related issues while loading Codec in the tests. So fall back to traditional
     * approach of manually overriding.
     */


    public void setPostingsFormat(PostingsFormat postingsFormat) {
        this.postingsFormat = postingsFormat;
    }

    @Override
    public PostingsFormat postingsFormat() {
        if (this.postingsFormat == null) {
            return getDelegatee().postingsFormat();
        }
        return this.postingsFormat;
    }

    @Override
    public StoredFieldsFormat storedFieldsFormat() {
        return getDelegatee().storedFieldsFormat();
    }

    @Override
    public TermVectorsFormat termVectorsFormat() {
        return getDelegatee().termVectorsFormat();
    }

    @Override
    public FieldInfosFormat fieldInfosFormat() {
        return getDelegatee().fieldInfosFormat();
    }

    @Override
    public SegmentInfoFormat segmentInfoFormat() {
        return getDelegatee().segmentInfoFormat();
    }

    @Override
    public NormsFormat normsFormat() {
        return getDelegatee().normsFormat();
    }

    @Override
    public LiveDocsFormat liveDocsFormat() {
        return getDelegatee().liveDocsFormat();
    }

    @Override
    public CompoundFormat compoundFormat() {
        return this.compoundFormat;
    }

    @Override
    public PointsFormat pointsFormat() {
        return getDelegatee().pointsFormat();
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