@ServiceScope(Scope.BuildTree::class)
class DefaultBeanStateWriterLookup : BeanStateWriterLookup {
    private
    val beanPropertyWriters = ConcurrentHashMap<Class<*>, BeanStateWriter>()

    override fun beanStateWriterFor(beanType: Class<*>): BeanStateWriter =
        beanPropertyWriters.computeIfAbsent(beanType, ::BeanPropertyWriter)

     * Closes the given [encoder] if it is [AutoCloseable].
     */
    override fun close() {
        (encoder as? AutoCloseable)?.close()
    }

    override fun beanStateWriterFor(beanType: Class<*>): BeanStateWriter =
        beanStateWriterLookup.beanStateWriterFor(beanType)

    override val isolate: WriteIsolate
        get() = getIsolate()

    override suspend fun write(value: Any?) {
        getCodec().run {

        //  instead of separately for each bean
        val generated = value is GeneratedSubclass
        writeBoolean(generated)
        beanStateWriterFor(value.javaClass).run {
            writeStateOf(value)
        }
    }

    private
    suspend fun ReadContext.readBeanOf(beanType: Class<*>, generated: Boolean, id: Int): Any {

    val tracer: Tracer?

    val sharedIdentities: WriteIdentities

    val circularReferences: CircularReferences

    override val isolate: WriteIsolate

    fun beanStateWriterFor(beanType: Class<*>): BeanStateWriter

    suspend fun write(value: Any?)

    fun writeClass(type: Class<*>)
}


interface Tracer {

    fun open(frame: String)

    fun close(frame: String)

        }
    }

    private
    fun record(operation: suspend WriteContext.() -> Unit) {
        operations.add(operation)
    }

    override fun defaultWriteObject() = record {
        beanStateWriterFor(beanType).run {
            writeStateOf(bean)
        }
    }

    override fun writeInt(`val`: Int) = record {
        writeInt(`val`)
    }

    override fun writeUTF(str: String) = record {