 to
a policy check result, this adapter returns an output with a single field
called <code>value</code>. The adapter is configured with a lookup table, which it uses to
populate the output value, or return <code>NOT_FOUND</code> error status if the input
instance key is not present in the lookup table.</p><ol><li><p>Deploy the demo adapter:</p><pre><code class=language-bash data-expandlinks=true>$ kubectl run keyval --image=gcr.io/istio-testing/keyval:release-1.1 --namespace istio-system --port 9070 --expos