Again, `getBoolean()` returns an `Option` and will never return null:

```scala
lazy val statusLevels = if (Play.configuration().getBoolean("metrics.showHttpStatusLevels").getOrElse(false))
  Some((100 to 500 by 100).toList map (x => x -> registry.meter(name(classOf[MetricsFilter], statusLevelName(s))).toMap)
else None
```