update
fun update(handle: ScopeHandle, scope: JsonObject = EmptyJsonObject, screen: String? = null, section: String? = null)
Replaces the contents of the frame handle refers to, in place — keeping its position, and thus its precedence, in the stack. Use this instead of remove + push when a still-mounted frame's scope/screen/section changes: re-pushing would move the frame to the top and let it wrongly override inner frames that are still on the stack. A no-op (and no snapshot churn) if the contents are unchanged, the handle was already removed, or it belongs to another stack.