def have_YSM_BUFFER_LOAD(self):
        return self.ver >= (0, 9, 9,)
This is a key handle permission flag that was introduced in 0.9.9.
dataset/ETHPy150Open Yubico/python-pyhsm/pyhsm/version.py/YHSM_Version.have_YSM_BUFFER_LOAD