  name: envoy.lua
        typed_config:
          &#34;@type&#34;: type.googleapis.com/envoy.extensions.filters.http.lua.v3.Lua
          inlineCode: |
            function envoy_on_request(handle)
              handle:headers():add(&#34;foo&#34;, &#34;bar&#34;)
            end
</code></pre><p>Both <code>istioctl analyze</code> and the validating webhook (run during <code>kubectl apply</code>) will warn about deprecated usage:</p><pre><code class=language-bash data-expandlinks=true data-repo=istio>$ kubectl