Simplify property memoization for Flyweight pattern by replacing it with ??=
#21579
| Job | Run time |
|---|---|
| 1m 42s | |
| 3m 4s | |
| 3m 5s | |
| 3m 6s | |
| 1m 35s | |
| 7m 14s | |
| 3m 16s | |
| 4m 39s | |
| 1m 58s | |
| 1m 45s | |
| 1m 39s | |
| 2m 58s | |
| 1m 58s | |
| 3m 0s | |
| 1m 41s | |
| 3m 13s | |
| 3m 14s | |
| 49m 7s |