def METHOD_NAME(self) -> None:
    self.eid = 'b1c968ad-4874-468d-b2e4-5ffa9b9964e9'
    ses = one.alyx.rest('sessions', 'partial_update', id=self.eid, data={'qc': 'NOT_SET'})
    assert ses['qc'] == 'NOT_SET', 'failed to reset qc field for test'
    extended = one.alyx.json_field_write('sessions', field_name='extended_qc',
                                         uuid=self.eid, data={})
    assert not extended, 'failed to reset extended_qc field for test'
    self.qc = QC(self.eid, one=one)