How to use the indy-sdk.createAndStoreMyDid function in indy-sdk

throw e;
        }
    } finally {
        console.info('wallet already exist, try to open wallet');
    }

    stewardWallet = await sdk.openWallet(
        {id: stewardWalletName},
        {key: 'whatever'}
    );

    let stewardDidInfo = {
        'seed': '000000000000000000000000Steward1'
    };

    [stewardDid, stewardKey] = await sdk.createAndStoreMyDid(stewardWallet, stewardDidInfo);

}

exports.getVerinym = async function(poolHandle, From, fromWallet, fromDid, fromToKey, to, toWallet, toFromDid, toFromKey, role) {
    console.log(`\"${to}\" > Create and store in Wallet \"${to}\" new DID"`);
    let [toDid, toKey] = await indy.createAndStoreMyDid(toWallet, {});

    console.log(`\"${to}\" > Authcrypt \"${to} DID info\" for \"${From}\"`);
    let didInfoJson = JSON.stringify({
        'did': toDid,
        'verkey': toKey
    });
    let authcryptedDidInfo = await indy.cryptoAuthCrypt(toWallet, toFromKey, fromToKey, Buffer.from(didInfoJson, 'utf8'));

    console.log(`\"${to}\" > Send authcrypted \"${to} DID info\" to ${From}`);

    console.log(`\"${From}\" > Authdecrypted \"${to} DID info\" from ${to}`);
    let [senderVerkey, authdecryptedDidInfo] =
        await indy.cryptoAuthDecrypt(fromWallet, fromToKey, Buffer.from(authcryptedDidInfo));

    let authdecryptedDidInfoJson = JSON.parse(Buffer.from(authdecryptedDidInfo));
    console.log(`\"${From}\" > Authenticate ${to} by comparision of Verkeys`);

exports.createDid = async function (didInfoParam) {
    let didInfo = didInfoParam || {};
    return await sdk.createAndStoreMyDid(await indy.wallet.get(), didInfo);
};