cdkでIoT topicをトリガーとするLambdaを定義したい

正直ぜんぜんわかりません。
既にLambdda本体とIoT Topicはありますので
これをデプロイして必要な権限を付与するようなcdkを作りたいです
ご教示願います。

python
1from aws_cdk import (
2    aws_lambda as _lambda,
3    core,
4    aws_iot,
5    aws_iam as iam
6)
7
8
9class IoTTriggerStack(core.Stack):
10
11    def __init__(self, scope: core.Construct, id: str, **kwargs) -> None:
12        super().__init__(scope, id, **kwargs)
13
14        # create lambda function
15        function = _lambda.Function(self, "lambda_function",
16                                    runtime=_lambda.Runtime.PYTHON_3_7,
17                                    handler="iotget.handler",
18                                    code=_lambda.Code.asset("."))
19        
20        aws_iot.CfnTopicRule.ActionProperty(*, lambda_=CfnTopicRule.ActionProperty.Lambda)
21        _lambda.Permission(*, "iot.amazonaws.com", action="lambda:InvokeFunction")
22

error
1  File "app.py", line 5, in <module>
2    from IoTtrigger_stack import IoTTriggerStack
3  File "C:\temp\iot-lambda_container\IoTtrigger_stack.py", line 20
4    aws_iot.CfnTopicRule.ActionProperty(*, lambda_=CfnTopicRule.ActionProperty.Lambda)
5                                         ^
6SyntaxError: invalid syntax
7Subprocess exited with error 1