 expressions.
Instances produced with this instance can be referenced by <a href=#Action>Actions</a> using name
&lsquo;RequestCountByService&rsquo;</p><pre><code class=language-yaml>- name: RequestCountByService
  template: istio.mixer.adapter.metric.Metric
  params:
    value: 1
    dimensions:
      source: source.name
      destination_ip: destination.ip
</code></pre><table class=message-fields><thead><tr><th>Field</th><th>Type</th><th>Description</th></tr></thead><tbody><tr id=Instance-name><td><code>na