@property
    def header(self):
        pgMar = self.pgMar
        if pgMar is None:
            return None
        return pgMar.header
The value of the ``w:header`` attribute in the ``<w:pgMar>`` child
dataset/ETHPy150Open python-openxml/python-docx/docx/oxml/section.py/CT_SectPr.header