object PcaLvmOutput extends MistFn {
  implicit val resultMessageEnc = mist.api.encoding.generic.encoder[ResultMessage]
  override def handle: Handle = {
      withArgs(
        arg[String]("table_prefix"),
        arg[Int]("nod_histogram_length", 31)
          .validated(nodHistogramLength => nodHistogramLength > 0, "nod_histogram_length value should be positive"),
        arg[Int]("limit_value", 250),
        arg[String]("sources", " 'ai_6010' "),
        arg[Int]("scaling_factor_days_processed", 90),
        arg[Int]("cross_device_level", 2),
        arg[String]("date_end"),
        arg[String]("ref_table_url", "jdbc:mysql://proddb-21.jiwiredev.com:3306/pca_ref"),
        arg[String]("ref_table_user", "pca_ro"),
        arg[Seq[String]]("views", Seq(
          "Time to 1st Visit histogram",
          "LCI Visits by Dimensions",
          "LCI visit metrics by All",
          "LCI by store",
          "LCI by DMA",
          "LCI by All")))
        .withMistExtras
        .onSparkContext((tablePrefix: String,
                         nodHistogramLength: Int,
                         limit: Int,
                         sources: String,
                         scalingFactorDaysProcessed: Int,
                         crossDeviceLevel: Int,
                         dateEnd: String,
                         refTableUrl: String,
                         refTableUser: String,
                         views: Seq[String],
                         extras: MistExtras,
                         sc: SparkContext) => {
          val result: ResultMessage = ???
          result
        })
  }