def METHOD_NAME(self):
    # Retrieves the BMC firmware version
    bmc_ver = dict()
    for ver in BMC_CMDS:            
        status, value = subprocess.getstatusoutput(BMC_CMDS[ver])
        if not status:
            bmc_ver[ver] = int(value.rstrip())
        else:
            return None
    bmc_version = "{}.{}.{}".format(bmc_ver["VER1"], bmc_ver["VER2"], bmc_ver["VER3"])
    return bmc_version