Option to give access to Elasticsearch for lambda functions

When you create a new function (lambda) you get an option to give the lambda access to specific resources. It would be good if we can specify elasticsearch too here.
(In my case I want to send a custom queries directly too, and not just through GraphQL, but it could be used to create API to allow more control of ES too, e.g. automate creating of geolocation type, update indexes etc..)