When you are done sending data back to the client, call this method
If there's a failure related to the computation, call this method.
Send some javascript to execute on the client side
Send some JavaScript to execute on the client side
Send data back to the client.
Send data back to the client. This may be called many times and each time, more data gets sent back to the client.
the data to send back.
A function (well, an interface with a bunch of methods on it) to call depending on the state of the round trip function.