kwl : kwl SEPARATOR kwl

def p_kwl_kwl(self, p):
        ''' kwl : kwl SEPARATOR kwl 
        '''
        _LOGGER.debug("kwl -> kwl ; kwl")
        if p[3] is not None:
            p[0] = p[3]
        elif p[1] is not None:
            p[0] = p[1]
        else:
            p[0] = TypedClass(None, TypedClass.UNKNOWN)