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# removeContentUnsupported(by:)

Removes all content not supported by the provided feature set.

```
mutating func removeContentUnsupported(by featureSet: FeatureSet) -> Bool
```

## Parameters

`featureSet`

The feature set to limit this markup to.

## Return Value

True if this was successful and the feature set is now supported.

## Discussion

If the returned value is `true` then `self.featureSet.isSubset(of: featureSet)` will be `true`.

---

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