using System.Collections.Generic; using System.Security; namespace System.Diagnostics.Metrics { internal abstract class InstrumentState { public abstract int ID { get; } [SecuritySafeCritical] public abstract void Update(double measurement, ReadOnlySpan<KeyValuePair<string, object>> labels); public abstract void Collect(Instrument instrument, Action<LabeledAggregationStatistics> aggregationVisitFunc); } }