e</th><th>Description</th><th>Required</th></tr></thead><tbody><tr id=AttributeGeneration-output_attribute><td><code>outputAttribute</code></td><td><code>string</code></td><td><p>The name of the attribute that is populated on a successful match.
An attribute name SHOULD NOT contain a <code>.</code>. You may use underscores for
namespacing instead.</p><p>Example: <code>istio_operationId</code></p><p><code>istio_</code> attribute namespace is reserved by Istio.</p><p>AttributeGeneration may fail to evaluate w