namespace System.Diagnostics.Metrics { public abstract class Instrument { public Meter Meter { get; } public string Name { get; } public string Description { get; } public string Unit { get; } public IEnumerable<KeyValuePair<string, object>> Tags { get; } public bool Enabled { get; } public virtual bool IsObservable { get; } protected Instrument(Meter meter, string name); protected Instrument(Meter meter, string name, string unit, string description); protected Instrument(Meter meter, string name, string unit = null, string description = null, IEnumerable<KeyValuePair<string, object>> tags = null); protected void Publish(); } }