def start(self):
        if not self.running:
            self.start_elapsed_time = time.time()
            self.start_cpu_time = time.clock()
            self.running = True
Clone environment, including element relationships.
dataset/ETHPy150Open GeoscienceAustralia/agdc/src/cube_util.py/Stopwatch.start--crossover with--dataset/ETHPy150Open mozilla/moztrap/moztrap/model/environments/models.py/Environment.clone