def __init__(self, assets_dir=None, requirements_file="requirements.yml"):
        self.assets_dir = assets_dir or Path(".") / "assets"
        self.requirements = GroupedRequirements()
        self.requirements.load(requirements_file)
        self.temp_dir = mkdtemp()
def create_snapshot_metadata(self, snapshot_id, metadata):
        """Create metadata for the snapshot."""
        put_body = json.dumps({'metadata': metadata})
        url = "snapshots/%s/metadata" % str(snapshot_id)
        resp, body = self.post(url, put_body)
        body = json.loads(body)
        return resp, body['metadata']