}
    }

    private
    suspend fun ReadContext.readBeanOf(beanType: Class<*>, generated: Boolean, id: Int): Any {
        val beanReader = beanStateReaderFor(beanType)
        val bean = beanReader.run { newBeanWithId(generated, id) }
        val effectiveBeanType = bean.javaClass
        val effectiveBeanReader =
            if (beanType === effectiveBeanType) beanReader
            else beanStateReaderFor(effectiveBeanType)

            }
        }
    }
}


interface BeanStateWriter {
    suspend fun WriteContext.writeStateOf(bean: Any)
}


interface BeanStateReader {

    fun ReadContext.newBeanWithId(generated: Boolean, id: Int) =
        newBean(generated).also {
            isolate.identities.putInstance(id, it)
        }

    fun ReadContext.newBean(generated: Boolean): Any

    val beanType = readClass()
    return withBeanTrace(beanType) {
        val beanStateReader = beanStateReaderFor(beanType)
        beanStateReader.run { newBeanWithId(false, id) }.also { bean ->
            decode(bean, beanType, beanStateReader)
        }
    }
}


private
fun ReadContext.putIdentity(id: Int, instance: Any) {