docs: add docstrings to memory channel classes #7629
| Job | Run time |
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| 27s | |
| 47s | |
| 24s | |
| 34s | |
| 2m 30s | |
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| 2m 48s | |
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| 1m 53s | |
| 2m 47s | |
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| 4m 11s | |
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| 2m 27s | |
| 3m 12s | |
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| 3m 18s | |
| 2m 56s | |
| 3m 22s | |
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| 5m 26s | |
| 1m 9s | |
| 3m 37s | |
| 2m 1s | |
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| 4m 56s | |
| 4m 39s | |
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| 2m 20s | |
| 3m 16s | |
| 5m 56s | |
| 3m 8s | |
| 3m 38s | |
| 4m 39s | |
| 3s | |
| 1h 48m 47s |