def METHOD_NAME(self):
    # Write the <sst> element.
    xmlns = 'http://schemas.openxmlformats.org/spreadsheetml/2006/main'
    attributes = [
        ('xmlns', xmlns),
        ('count', self.string_table.count),
        ('uniqueCount', self.string_table.unique_count),
    ]
    self._xml_start_tag('sst', attributes)