CognitoUserPoolPreTokenGenerationEvent Only supports V1 of the event

[Neil Horton]

I am looking to add some custom claims to an access token during the authorisation process following the instructions here https://docs.aws.amazon.com/cognito/latest/developerguide/user-pool-lambda-pre-token-generation.html.

There only seems to be support for the basic version of CognitoUserPoolPreTokenGenerationEvent. The advanced version with parameters to customise the access token seem to be missing?

Is it possible to add this event?