private def users(maybeAutomaticPMAssignmentDto: Option[AutomaticPMAssignmentDto]): Set[UserId] = {
    maybeAutomaticPMAssignmentDto.toSeq
      .flatMap { automaticPMAssignemntDto =>
        automaticPMAssignemntDto.forOtherServices +: automaticPMAssignemntDto.forServices.map(_.strategy)
      }
      .flatMap {
        case SelectSpecificActiveUser(userId) => Some(userId)
        case _                                => None
      }
      .toSet
  }