In CloudFormation, [AWS::CloudFront::Distribution.DistributionConfig](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-cloudfront-distribution-distributionconfig.html) allows you specify an optional [webACLId]( https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-cloudfront-distribution-distributionconfig.html#cfn-cloudfront-distribution-distributionconfig-webaclid) property to associate an AWS WAF WebACL resource. Currently `@aws-cdk/aws-cloudfront` does not expose this property.