How to use the pyzotero.zotero.Zupload function in pyzotero

def __init__(self, zinstance, payload, parentid=None, basedir=None):
        super(Zupload, self).__init__()
        self.zinstance = zinstance
        self.payload = payload
        self.parentid = parentid
        if basedir is None:
            self.basedir = Path("")
        elif isinstance(basedir, Path):
            self.basedir = basedir
        else:
            self.basedir = Path(basedir)

def _attachment(self, payload, parentid=None):
        """
        Create attachments
        accepts a list of one or more attachment template dicts
        and an optional parent Item ID. If this is specified,
        attachments are created under this ID
        """
        attachment = Zupload(self, payload, parentid)
        res = attachment.upload()
        return res

def upload_attachments(self, attachments, parentid=None, basedir=None):
        """Upload files to the already created (but never uploaded) attachments"""
        return Zupload(self, attachments, parentid, basedir=basedir).upload()