def compute_etag(self):
        version_hash = self._get_cached_version(self.absolute_path)
        if not version_hash:
            return None
        return '"%s"' % (version_hash, )
try not to leave child process server side
dataset/ETHPy150Open RobotWebTools/rosbridge_suite/rosbridge_server/src/tornado/web.py/StaticFileHandler.compute_etag--crossover with--dataset/ETHPy150Open ziirish/burp-ui/burpui/misc/backend/burp2.py/Burp.__exit__