public void registerBlockRange(
      final Hash blockHash, final long height, final long earliestBlockHeight) {
    chainHeadState.update(blockHash, height, earliestBlockHeight);
  }
Return A read-only snapshot of this peer's current {@code chainState}

@return A read-only snapshot of this peer's current {@code chainState}
ethereum/eth/src/main/java/org/hyperledger/besu/ethereum/eth/manager/EthPeer.java