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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def onStart(self, *args, **kwarg):

 """
 Verify user input and kick off the client's program if valid
 """

        with transactUI(self):
            config = self.navbar.getActiveConfig()
            config.resetErrors()
            if config.isValid():
                self.clientRunner.run(self.buildCliString())
                self.showConsole()
            else:
                config.displayErrors()
                self.Layout()