@property
    def main_document_part(self):
        return self.part_related_by(RT.OFFICE_DOCUMENT)
If the node to be deleted is unknown, 404 Not Found is returned.
dataset/ETHPy150Open python-openxml/python-docx/docx/opc/package.py/OpcPackage.main_document_part--crossover with--dataset/ETHPy150Open ralphm/idavoll/idavoll/test/test_gateway.py/DeleteResourceTest.test_postUnknownNode