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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 _safe_release_connection(self):
 """Try to release a connection. If an exception is hit, log and return the error string. """

        try:
            self.adapter.release_connection()
        except Exception as exc:
            logger.debug(
                'Error releasing connection for node {}: {!s}\n{}'
                .format(self.node.name, exc, traceback.format_exc())
            )
            return dbt.compat.to_string(exc)

        return None