Simplify property memoization for Flyweight pattern by replacing it with ??=
#21577
| Job | Run time |
|---|---|
| 3m 4s | |
| 3m 10s | |
| 1m 41s | |
| 3m 19s | |
| 8m 59s | |
| 1m 35s | |
| 4m 41s | |
| 1m 59s | |
| 3m 19s | |
| 2m 52s | |
| 1m 51s | |
| 1m 41s | |
| 2m 56s | |
| 1m 39s | |
| 3m 14s | |
| 3m 2s | |
| 1m 40s | |
| 50m 42s |