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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 flushall(self, asynchronous=False):
 """ Delete all keys in all databases on the current host. ``asynchronous`` indicates whether the operation is executed asynchronously by the server. """

        args = []
        if asynchronous:
            args.append(Token.get_token('ASYNC'))
        return self.execute_command('FLUSHALL', *args)