How to use the @ethersproject/hdnode.HDNode function in @ethersproject/hdnode

}
                                account = {
                                    _isKeystoreAccount: true,
                                    address: address,
                                    privateKey: bytes_1.hexlify(privateKey)
                                };
                                // Version 0.1 x-ethers metadata must contain an encrypted mnemonic phrase
                                if (utils_1.searchPath(data, "x-ethers/version") === "0.1") {
                                    mnemonicCiphertext = utils_1.looseArrayify(utils_1.searchPath(data, "x-ethers/mnemonicCiphertext"));
                                    mnemonicIv = utils_1.looseArrayify(utils_1.searchPath(data, "x-ethers/mnemonicCounter"));
                                    mnemonicCounter = new aes_js_1.default.Counter(mnemonicIv);
                                    mnemonicAesCtr = new aes_js_1.default.ModeOfOperation.ctr(mnemonicKey, mnemonicCounter);
                                    path = utils_1.searchPath(data, "x-ethers/path") || hdnode_1.defaultPath;
                                    entropy = bytes_1.arrayify(mnemonicAesCtr.decrypt(mnemonicCiphertext));
                                    mnemonic = hdnode_1.entropyToMnemonic(entropy);
                                    node = hdnode_1.HDNode.fromMnemonic(mnemonic).derivePath(path);
                                    if (node.privateKey != account.privateKey) {
                                        throw new Error("mnemonic mismatch");
                                    }
                                    account.mnemonic = node.mnemonic;
                                    account.path = node.path;
                                }
                                return [2 /*return*/, new KeystoreAccount(account)];
                            });
                        });

exports.hexValue = bytes_1.hexValue;
exports.hexZeroPad = bytes_1.hexZeroPad;
exports.isHexString = bytes_1.isHexString;
exports.joinSignature = bytes_1.joinSignature;
exports.zeroPad = bytes_1.zeroPad;
exports.splitSignature = bytes_1.splitSignature;
exports.stripZeros = bytes_1.stripZeros;
var hash_1 = require("@ethersproject/hash");
exports.hashMessage = hash_1.hashMessage;
exports.id = hash_1.id;
exports.isValidName = hash_1.isValidName;
exports.namehash = hash_1.namehash;
var hdnode_1 = require("@ethersproject/hdnode");
exports.defaultPath = hdnode_1.defaultPath;
exports.entropyToMnemonic = hdnode_1.entropyToMnemonic;
exports.HDNode = hdnode_1.HDNode;
exports.isValidMnemonic = hdnode_1.isValidMnemonic;
exports.mnemonicToEntropy = hdnode_1.mnemonicToEntropy;
exports.mnemonicToSeed = hdnode_1.mnemonicToSeed;
var json_wallets_1 = require("@ethersproject/json-wallets");
exports.getJsonWalletAddress = json_wallets_1.getJsonWalletAddress;
var keccak256_1 = require("@ethersproject/keccak256");
exports.keccak256 = keccak256_1.keccak256;
var logger_1 = require("@ethersproject/logger");
exports.Logger = logger_1.Logger;
var sha2_1 = require("@ethersproject/sha2");
exports.sha256 = sha2_1.sha256;
var solidity_1 = require("@ethersproject/solidity");
exports.solidityKeccak256 = solidity_1.keccak256;
exports.solidityPack = solidity_1.pack;
exports.soliditySha256 = solidity_1.sha256;
var random_1 = require("@ethersproject/random");

Wallet.fromMnemonic = function (mnemonic, path, wordlist) {
        if (!path) {
            path = hdnode_1.defaultPath;
        }
        return new Wallet(hdnode_1.HDNode.fromMnemonic(mnemonic, null, wordlist).derivePath(path));
    };
    return Wallet;