def METHOD_NAME(self):
    # Write the <cp:coreProperties> element.
    xmlns_cp = (
        "http://schemas.openxmlformats.org/package/2006/"
        + "metadata/core-properties"
    )
    xmlns_dc = "http://purl.org/dc/elements/1.1/"
    xmlns_dcterms = "http://purl.org/dc/terms/"
    xmlns_dcmitype = "http://purl.org/dc/dcmitype/"
    xmlns_xsi = "http://www.w3.org/2001/XMLSchema-instance"
    attributes = [
        ("xmlns:cp", xmlns_cp),
        ("xmlns:dc", xmlns_dc),
        ("xmlns:dcterms", xmlns_dcterms),
        ("xmlns:dcmitype", xmlns_dcmitype),
        ("xmlns:xsi", xmlns_xsi),
    ]
    self._xml_start_tag("cp:coreProperties", attributes)