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# update(_:withPreprocessed:eventHandler:)

Updates a transformer with a new sequence of preprocessed features.

```
func update<InputSequence, FeatureSequence>(_ transformer: inout PreprocessingUpdatableSupervisedTemporalEstimator<Preprocessor, Estimator>.Transformer, withPreprocessed preprocessed: InputSequence, eventHandler: EventHandler? = nil) async throws where InputSequence : Sequence, FeatureSequence : TemporalSequence, Preprocessor.Output == FeatureSequence.Feature, InputSequence.Element == AnnotatedFeature<FeatureSequence, Estimator.Annotation>, FeatureSequence.Feature == Estimator.Transformer.Input
```

## Parameters

`transformer`

A transformer to update.

`preprocessed`

A sequence of preprocessed features.

`eventHandler`

An event handler.

---

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