val nullableRowToTaskType: Column[TaskType.Value] = Column[TaskType.Value] {
    case (value, MetaDataItem(qualified, _, _)) =>
      Option(value) match {
        case Some(TaskType.Approval)        => Right(TaskType.Approval)
        case Some(TaskType.Standard) | None => Right(TaskType.Standard)
        case _ =>
          Left(TypeDoesNotMatch("Cannot convert " + value + " to TaskType for column " + qualified))
      }
  }

...
SqlParser.get[TaskType.Value](qualifiedColumnNameOf(prefix, "task_type"))(nullableRowToTaskType)
...

play.sbt.PlayExceptions$CompilationException: Compilation error[object Column does not take type parameters.]
    at play.sbt.PlayExceptions$CompilationException$.apply(PlayExceptions.scala:34)
    at play.sbt.PlayExceptions$CompilationException$.apply(PlayExceptions.scala:34)
    at scala.Option.map(Option.scala:146)
    at play.sbt.run.PlayReload$.$anonfun$taskFailureHandler$1(PlayReload.scala:33)
    at scala.Option.map(Option.scala:146)
    at play.sbt.run.PlayReload$.taskFailureHandler(PlayReload.scala:28)
    at play.sbt.run.PlayReload$.compileFailure(PlayReload.scala:24)
    at play.sbt.run.PlayReload$.$anonfun$compile$3(PlayReload.scala:51)
    at scala.util.Either$LeftProjection.map(Either.scala:573)
    at play.sbt.run.PlayReload$.compile(PlayReload.scala:51)