override def buildFeatures()

in core/src/main/scala/com/spotify/featran/transformers/Transformer.scala [178:181]


  override def buildFeatures(a: Option[A], c: Unit, fb: FeatureBuilder[_]): Unit = a match {
    case Some(x) => fb.add(name, map(x))
    case None    => fb.add(name, 0.0)
  }