Function
writable
Common
```kotlin
public inline fun T.writable(
state: StateObject,
snapshot: Snapshot,
block: T.() -> R,
): R
```
Call `block` with a writable state record for `snapshot` of the given record. It is assumed that
this is called for the first state record in a state object. If the snapshot is read-only calling
this will throw.
writable
Common
```kotlin
public inline fun T.writable(state: StateObject, block: T.() -> R): R
```
Call `block` with a writable state record for the given record. It is assumed that this is called
for the first state record in a state object. A record is writable if it was created in the
current mutable snapshot.