data class SomeClass(val one: String) : Named {
    init {
        println("XXX: creating $one")
    }

    override fun getName(): String {
        return one
    }
}

val belowCollection = project.objects.domainObjectContainer(SomeClass::class.java) { name ->
    SomeClass(name)
}

belowCollection.register("one")
belowCollection.register("two")

val aboveCollection = belowCollection.matching { someClass ->
    someClass.one == "one" || someClass.one == "three"
}

println("ZZZ: ${aboveCollection.names.joinToString()}")

belowCollection.register("three")

println("ZZZ: ${aboveCollection.names.joinToString()}")

aboveCollection.all {
    println("XXX: $this")
}