Register Metrics to make them visible to Observatory.
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; }
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Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dart.dev/stable/2.5.0/dart-developer/Metrics/register.html