@Test
  public void encodingMatchesKnownRawHexString() {
    final Bytes expectedRawDecoding = Bytes.fromHexString(RAW_HEX_ENCODING_STRING);
    assertThat(bftExtraDataCodec.encode(DECODED_EXTRA_DATA_FOR_RAW_HEX_ENCODING_STRING))
        .isEqualTo(expectedRawDecoding);
  }
This test specifically verifies that {@link QbftExtraDataCodec#decode(BlockHeader)} uses {@link
RLPInput#readIntScalar()} rather than {@link RLPInput#readInt()} to decode the round number
consensus/qbft/src/test/java/org/hyperledger/besu/consensus/qbft/QbftExtraDataCodecTest.java