updates descriptions of return values

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 85.17%. Comparing base (0297fa5) to head (a315d10).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #293 +/- ## ======================================= Coverage 85.17% 85.17% ======================================= Files 50 50 Lines 2239 2239 ======================================= Hits 1907 1907 Misses 332 332 ```

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