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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 _unregisterHandler(self, handler, shutdown=True):
 """ Unregisters the logging handler. :param handler: A handler previously registered with this loggger. :param shutdown: Flag to shutdown the handler. """

        if handler in self._handlers:
            self._handlers.remove(handler)
            self._logger.removeHandler(handler)
            if shutdown:
                try:
                    handler.close()
                except KeyError:
                    # Depending on the Python version, it's possible for this call
                    # to fail most likely because some logging module objects get
                    # garbage collected before the VSGLogger object is.
                    pass