Add type hints for the get_unused_code function and the fields of Item.
#1816
| Job | Run time |
|---|---|
| 1m 45s | |
| 1m 13s | |
| 1m 5s | |
| 38s | |
| 37s | |
| 1m 46s | |
| 59s | |
| 54s | |
| 57s | |
| 58s | |
| 1m 2s | |
| 1m 36s | |
| 3m 24s | |
| 2m 52s | |
| 3m 48s | |
| 2m 43s | |
| 2m 52s | |
| 5m 9s | |
| 34m 18s |