The apples block does demonstrate the flow control even when a user with what if attitude presses
'browser back button' or clone a page.
there is no sendPageAndWait functionality in the Apples example CalculationApple.java. It
only uses sendPage function.
sendPage is used normally for terminating the flow. ie., user should not be able to change
the values of the shopping cart after the submit button is pressed. But the javascript does
the same through k.invalidate(),
but in java it is not the same case.
thanks,
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