I've read the issue and everything about how to add a schema directive:

But what I need to know is how to add a non-schema directive (I.E. for a query, mutation, etc.).

I am supposed to be able to define a directive like this:

directive @hasAccess(permission: [Permission!]!) on QUERY | MUTATION | SUBSCRIPTION | FIELD

But what do I need to create/do on the Java side for that to be registered in the SchemaParser? Is this even possible right now with this library?