def _user_agent(self):
        """Generates the user agent string which is helpful in identifying
        different tools in the internet. Valid user-agent ionq_client header that
        indicates the request is from cirq_ionq along with the system, os,
        python,libraries details.

        Returns:
            str: A string of generated user agent.
        """
        cirq_version_string = f'cirq/{cirq_version}'
        python_version_string = f'python/{platform.python_version()}'
        return f'{cirq_version_string} ({python_version_string})'
Generates the user agent string which is helpful in identifying
        different tools in the internet. Valid user-agent ionq_client header that
        indicates the request is from cirq_ionq along with the system, os,
        python,libraries details.

        Returns:
            str: A string of generated user agent.
        
cirq-ionq/cirq_ionq/ionq_client.py