@classmethod
def pa(cls, ab, bb, hbp, sf, sh):
    """
        Plate appearance
        :param ab: at bat
        :param bb: base on ball
        :param hbp: hit by pitch
        :param sf: sacrifice fly
        :param sh: sacrifice hit
        :return: (int)Plate appearance
        """
    return ab + bb + hbp + sf + sh
