AWSメモ >
https://docs.aws.amazon.com/ja_jp/AWSCloudFormation/latest/UserGuide/transform-aws-serverless.html
https://docs.aws.amazon.com/ja_jp/AWSCloudFormation/latest/UserGuide/cfn-reference-lambda.html
https://docs.aws.amazon.com/ja_jp/AWSCloudFormation/latest/UserGuide/aws-resource-lambda-function.html
https://docs.aws.amazon.com/ja_jp/AWSCloudFormation/latest/UserGuide/transform-aws-serverless.html