I'm so confused with how to create an hmac - I need a

guid

but apparently the way to do this is a hacky process of loading a suitelet, getting a guid, and using that forever until the password (or whatever) changes? [from here https://stackoverflow.com/questions/45816153/generate-guid-at-runtime-without-using-form-in-netsuite] - is that really the easiest way to use

crypto.createHmac

?