 Resource Definition name</th><th>Purpose</th></tr></thead><tbody><tr><td><code>adapter</code></td><td>Specification of Istio extension declarations</td></tr><tr><td><code>attributemanifest</code></td><td>Specification of Istio extension declarations</td></tr><tr><td><code>template</code></td><td>Specification of Istio extension declarations</td></tr><tr><td><code>handler</code></td><td>Specification of extension invocations</td></tr><tr><td><code>rule</code></td><td>Specification of extension invocations</