const bps = require('@sap/cloud-sdk-vdm-business-partner-service');

const { businessPartnerApi, businessPartnerAddressApi } = bps.businessPartnerService();

// Create destination
dest = {
    url: "https://sandbox.api.sap.com/s4hanacloud"
};

// Create request
req = businessPartnerApi.requestBuilder()
    .getAll()
    .select(
        businessPartnerApi.schema.BUSINESS_PARTNER,
        businessPartnerApi.schema.FIRST_NAME,
        businessPartnerApi.schema.LAST_NAME,
        businessPartnerApi.schema.TO_BUSINESS_PARTNER_ADDRESS
            .select(
                businessPartnerAddressApi.schema.ADDRESS_ID,
                businessPartnerAddressApi.schema.COUNTRY,
                businessPartnerAddressApi.schema.CITY_NAME
            )
    )
    .filter(
        businessPartnerApi.schema.LAST_NAME.equals("Smith")
    )
    .addCustomHeaders(
        { apikey: '>>>YOUR API KEY<<<' });

// execute request
req.execute(dest)
    .then(
        // success
        function (result) {
            console.log(JSON.stringify(result, null, '\t'));
        },
        // error
        function (error) {
            console.log("Error: " + error.message);
        }
    );