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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 launchApplication(self, pchAppKey):
 """ Launches the application. The existing scene application will exit and then the new application will start. This call is not valid for dashboard overlay applications. """


        fn = self.function_table.launchApplication
        result = fn(pchAppKey)
        return result