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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 _get_ssh_client(self):
 """Return a new or existing SSH client for given ip."""

        return ipa_utils.get_ssh_client(
            self.instance_ip,
            self.ssh_private_key_file,
            self.ssh_user,
            timeout=self.timeout
        )