def METHOD_NAME(self, expression: ConditionalExpression) -> None:
    if_expr = get(expression.if_expression)
    else_expr = get(expression.else_expression)
    then_expr = get(expression.then_expression)
    val = if_expr + else_expr + then_expr
    if expression.is_lvalue:
        val += [expression]
    set_val(expression, val)