Finalized Generics Design

### What

TBD

### Why

TBD

### How

TBD

#### Tasks

- [ ] TBD

### Notes

These are the example issues (open or closed) for generics to verify during the design of the feature:

### Out of scope

- TBD

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### Resources

1. #13725

Start by reviewing the linked resource, issue #13725, and the generics-related example issues referenced in this issue. The payload names no files, tests, or implementation entry point; the work is done only when the design, tasks, scope, and verification examples are specified.

Written by the indexing model from the issue text.