Auth token. This is the token returned by get_auth_token(). Just the token, do not include "Bearer" in this string, that is handled inside the method.
Organization context. This is provided by the Finite State API management. It looks like "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx".
Create a new Artifact.
This is an advanced method - you are probably looking for createNewAssetVersionAndUploadBinary or createNewAssetVersionAndUploadTestResults.