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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 execute(self):
 """ Executes all main windows by starting the Qt main application """

        logger.info("Starting Argos event loop...")
        exitCode = self.qApplication.exec_()
        logger.info("Argos event loop finished with exit code: {}".format(exitCode))
        return exitCode