computed
inline fun <T, V> CSProperty<T>.computed(parent: CSHasRegistrations? = null, crossinline from: (T) -> V, crossinline to: (V) -> T, noinline onChange: ArgFun<V>? = null): CSProperty<V>
inline fun <T, V> CSProperty<T>.computed(parent: CSHasRegistrations? = null, crossinline get: (T) -> V, crossinline set: (CSProperty<T>, V) -> Unit, noinline onChange: ArgFun<V>? = null): CSProperty<V>
inline fun <T, V> CSHasChangeValue<T>.computed(parent: CSHasRegistrations? = null, crossinline child: (T) -> CSProperty<V>, noinline onChange: ArgFun<V>? = null): CSProperty<V>