def METHOD_NAME(self, slbin, nfull):
    r"""Extend the list (slbin) to the length (nfull)
    the attched element of list is 0.
    such as, when
    | slbin = ['10010','10100'],
    | nfull = 4
    extent it to
    ['10010','10100','00000','00000]
    """
    nfull = int(nfull)
    n = len(slbin)
    dn = nfull - n
    ds = "0" * len(slbin[0])
    return slbin + [ds for ii in range(dn)]