title: How to instrument async calls in NewRelic (.NET Agent)
body: <p>I would like to make the <code>NewRelic.Api.Agent.NewRelic.NoticeError</code> async. (<a href="https://docs.newrelic.com/docs/agents/net-agent/net-agent-api/noticeerror-net-agent-api" rel="nofollow noreferrer">NoticeError documentation</a>).
  There is no explicit async <code>NoticeError</code> function in the API.
  But NewRelic says <a href="https://docs.newrelic.com/docs/agents/net-agent/other-features/async-support-net" rel="nofollow noreferrer">here</a> that it is possible to &quot;instrument&quot; calls as async.
  What does that mean? How do you accomplish this specifically on the <code>NoticeError</code> function?</p>