class FeatureExtractionStepImpl<T> : FeatureExtractorBuilder.FeatureExtractionStep<T> (source)
| FeatureExtractionStepImpl(container: AssertionContainer<T>, description: Translatable, representationForFailure: Any) | 
| val container: AssertionContainer<T>The previously specified assertion container from which we are going to extract the feature. | |
| val description: TranslatableThe previously specified description which describes the kind of feature extraction. | |
| val representationForFailure: AnyThe previously specified representation which will be used in case the feature cannot be extracted. | 
| fun <R> withFeatureExtraction(extraction: (T) -> Option<R>): FeatureExtractorBuilder.OptionsStep<T, R>Defines the feature extraction as such which is most likely based on the current subject (but does not need to be). |