private static IDisposable Measure <T>(this ISemanticLog log, SemanticLogLevel logLevel, T context, LogFormatter <T> action)
{
var watch = ValueStopwatch.StartNew();
return(new DelegateDisposable(() =>
{
var elapsedMs = watch.Stop();
log.Log(logLevel, (Context: context, elapsedMs), null, (ctx, w) =>
{
action?.Invoke(ctx.Context, w);
w.WriteProperty("elapsedMs", elapsedMs);
});
}));
}