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# subject(from:)

Produces the subject of evaluation from a given sample.

```
nonisolated(nonsending) func subject(from sample: Self.Sample) async throws -> Self.Subject
```

## Parameters

`sample`

The input sample.

## Return Value

The subject of evaluation.

## Discussion

Implement this method to run your system under test and return the subject
that evaluators will measure.

---

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