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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 resume(self):
 """Resumes all paused snippet clients."""

        for client in self._snippet_clients.values():
            # Resume is only applicable if a client is alive and does not have
            # a host port.
            if client.is_alive and client.host_port is None:
                self._device.log.debug('Resuming SnippetClient<%s>.',
                                       client.package)
                client.restore_app_connection()
            else:
                self._device.log.debug('Not resuming SnippetClient<%s>.',
                                       client.package)