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

exports.sendRequest = async function (theirDid, encryptedMessage) {
    let myDid = await indy.pairwise.getMyDid(theirDid);
    let credentialOffer = await indy.crypto.authDecrypt(myDid, encryptedMessage);
    let [, credentialDefinition] = await indy.issuer.getCredDef(await indy.pool.get(), await indy.did.getEndpointDid(), credentialOffer.cred_def_id); // FIXME: Was passing in myDid. Why?
    let masterSecretId = await indy.did.getEndpointDidAttribute('master_secret_id');
    let [credRequestJson, credRequestMetadataJson] = await sdk.proverCreateCredentialReq(await indy.wallet.get(), myDid, credentialOffer, credentialDefinition, masterSecretId);
    indy.store.pendingCredentialRequests.write(credRequestJson, credRequestMetadataJson);
    let message = await indy.crypto.buildAuthcryptedMessage(myDid, theirDid, MESSAGE_TYPES.REQUEST, credRequestJson);
    let theirEndpointDid = await indy.did.getTheirEndpointDid(theirDid);
    return indy.crypto.sendAnonCryptedMessage(theirEndpointDid, message);
};

async function issueCredentialToSelf(credentialDefinitionId, credentialData) {
  try {
    let endpointDID = await indy.did.getEndpointDid();
    let wallet = await indy.wallet.get();
    let pool = await indy.pool.get();
    let credentialOffer = await sdk.issuerCreateCredentialOffer(wallet, credentialDefinitionId);
    try {
      credentialOffer.data = JSON.parse(credentialData);
    } catch (e) {
      credentialOffer.data = {};
      console.log(e);
    }
    let [, credentialDefinition] = await indy.issuer.getCredDef(pool, endpointDID, credentialOffer.cred_def_id);
    let masterSecretId = await indy.did.getEndpointDidAttribute('master_secret_id');
    let [credRequestJson, credRequestMetadataJson] = await sdk.proverCreateCredentialReq(wallet, endpointDID, credentialOffer, credentialDefinition, masterSecretId);
    let schema = await indy.issuer.getSchema(credentialOffer.schema_id);

    let credentialValues = {};
    for (let attr of schema.attrNames) {
      if (credentialOffer.data[attr]) {
        credentialValues[attr] = {raw: credentialOffer.data[attr], encoded: indy.credentials.encode(credentialOffer.data[attr])};
      }
    }
    let [credential] = await sdk.issuerCreateCredential(wallet, credentialOffer, credRequestJson, credentialValues);
    await sdk.proverStoreCredential(wallet, null, credRequestMetadataJson, credential, credentialDefinition);
  } catch (e) {
      console.log(e);
  }
}