not FP recursion

def recursiveTypefinder(parse: opennlp.tools.parser.Parse): Unit = {

    if (parse.getType().equals("NN") || parse.getType().equals("JJ")
      || parse.getType().equals("NNS")
      || parse.getType().equals("NNP")) {
      println(parse.getCoveredText)
      concepts.add(parse.getCoveredText)
    }

    for (child <- parse.getChildren) {
      recursiveTypefinder(child)
    }
  }

def recursiveTypefinder(parse: opennlp.tools.parser.Parse): List[String] = {
val concepts = parse.getType match {
case "NN" | "JJ" | ... => List(parse.getCoveredText)
case _ => Nil
}
concepts :: parse.getChildren.flatMap(recursiveTypefinder)
}