1. Dart
2. dart:developer
3. Metrics
4. register method

Metrics class

1. Constructors
2. Metrics
3. Properties
4. hashCode
5. runtimeType
6. Methods
7. noSuchMethod
8. toString
9. Operators
10. operator ==
11. Static methods
12. deregister
13. register

static void register(Metric metric) {
  ArgumentError.checkNotNull(metric, 'metric');
  if (_metrics[metric.name] != null) {
    throw new ArgumentError('Registered metrics have unique names');
  }
  _metrics[metric.name] = metric;
}