presto-main/src/main/java/io/prestosql/execution/TaskManagerConfig.java/TaskManagerConfig/setPerOperatorCpuTimerEnabled
class TaskManagerConfig:    @LegacyConfig("task.verbose-stats")
    @Config("task.per-operator-cpu-timer-enabled")
    public TaskManagerConfig setPerOperatorCpuTimerEnabled(boolean perOperatorCpuTimerEnabled)
    {
        this.perOperatorCpuTimerEnabled = perOperatorCpuTimerEnabled;
        return this;
    }