lab4/layers/serverless-saas-layer/src/main/java/com/amazon/aws/partners/saasfactory/TokenManager.java
resources/lambda-authorizer/src/main/java/com/amazon/aws/partners/saasfactory/CognitoSigningKeyResolver.java

lab4/layers/serverless-saas-layer/src/main/java/com/amazon/aws/partners/saasfactory/TokenManager.java
resources/lambda-authorizer/src/main/java/com/amazon/aws/partners/saasfactory/Authorizer.java