@classmethod
def add_op2_data(cls, data, comment=''):
    """
        Adds an NSM/NSM1 card from the OP2

        Parameters
        ----------
        data : List[varies]
            a list of fields defined in OP2 format
        comment : str; default=''
            a comment for the card
        """
    sid = data[0]
    nsm_type = data[1]
    pid_eid = data[2]
    value = data[3]
    return cls(sid, nsm_type, pid_eid, value, comment=comment)
