Search.kt

data class Search(
        val id: UUID = randomUUID(),
        val criteria: Criteria,
        val spaceTrains: SpaceTrains,
        val selection: Selection = Selection())

data class SpaceTrain(
        val number: String,
        val bound: Bound,
        val originId: String,
        val destinationId: String,
        val schedule: Schedule,
        val fares: Fares,
        val compatibleSpaceTrains: Set<String> = emptySet())

typealias SpaceTrains = List<SpaceTrain>