@staticmethod
def dump_root_class_stats(intf: str):
    tc_cmd = 'tc -s -s -d q ls dev {}'.format(intf)
    args = argSplit(tc_cmd)
    try:
        output = subprocess.check_output(args)
        print(output.decode())
    except subprocess.CalledProcessError:
        print('Exception dumping Qos State for %s', intf)
@staticmethod
def dump_root_class_stats(intf: str):
    tc_cmd = 'tc -s -s -d q ls dev {}'.format(intf)
    args = argSplit(tc_cmd)
    try:
        output = subprocess.check_output(args)
        print(output.decode())
    except subprocess.CalledProcessError:
        print('Exception dumping Qos State for %s', intf)