CodeSigningConfig for AWS Lambda

Hello,
Is there a way to add CodeSigningConfigArn in the serverless.yml file? As per AWS Cloudformation documentation, CodeSigningConfigArn is used to enable code signing for the function.

https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-lambda-function.html

How do I use that with Serverless?