anchor.diff:    /// This operation is potentially dangerous and should be used judiciously.
     /// The isolate stops operating *immediately*. It throws if the optional
     /// [message] does not adhere to the limitations on what can be sent from one
  -  /// isolate to another. It also throws if a [finalMessagePort] is associated
  -  /// with an isolate spawned outside of current isolate group, spawned via
  -  /// [spawnUri].
  +  /// isolate to another (see [SendPort.send] for more details). It also throws
  +  /// if a [finalMessagePort] is associated with an isolate spawned outside of
  +  /// current isolate group, spawned via [spawnUri].
     ///
     /// If successful, a call to this method does not return. Pending `finally`
     /// blocks are not executed, control flow will not go back to the event loop,
  
positive.code:   ///   - [SendPort]
    ///   - [Capability]
    ///
    /// In the special circumstances when two isolates share the same code and are
    /// running in the same process (e.g. isolates created via [Isolate.spawn]),
    /// it is also possible to send object instances (which would be copied in the
    /// process).
    ///
    /// The send happens immediately and doesn't block.  The corresponding receive
    /// port can receive the message as soon as its isolate's event loop is ready
    /// to deliver it, independently of what the sending isolate is doing.
    void send(Object? message);
  
    /// Tests whether [other] is a [SendPort] pointing to the same
  
negative.code:   /// code will run in the isolate.)
    ///
    /// If [finalMessagePort] is provided, and the [message] can be sent through
    /// it (see [SendPort.send] for more details), then the message is sent
    /// through that port as the final operation of the current isolate. The
    /// isolate terminates immediately after that [SendPort.send] call returns.
    ///
    /// If the port is a native port -- one provided by [ReceivePort.sendPort] or
    /// [RawReceivePort.sendPort] -- the system may be able to send this final
  