def METHOD_NAME(self):
    # Write the <dcterms:created> element.
    date = self.properties.get("created", datetime.now(timezone.utc))
    xsi_type = "dcterms:W3CDTF"
    date = self._datetime_to_iso8601_date(date)
    attributes = [
        (
            "xsi:type",
            xsi_type,
        )
    ]
    self._xml_data_element("dcterms:created", date, attributes)