Docs: Add missing kafka emitter config (#16332)
diff --git a/docs/development/extensions-contrib/kafka-emitter.md b/docs/development/extensions-contrib/kafka-emitter.md
index a3641e8..eca258e 100644
--- a/docs/development/extensions-contrib/kafka-emitter.md
+++ b/docs/development/extensions-contrib/kafka-emitter.md
@@ -47,6 +47,7 @@
| `druid.emitter.kafka.producer.config` | JSON configuration to set additional properties to Kafka producer. | no | none |
| `druid.emitter.kafka.clusterName` | Optional value to specify the name of your Druid cluster. It can help make groups in your monitoring environment. | no | none |
| `druid.emitter.kafka.extra.dimensions` | Optional JSON configuration to specify a map of extra string dimensions for the events emitted. These can help make groups in your monitoring environment. | no | none |
+| `druid.emitter.kafka.producer.hiddenProperties` | JSON configuration to specify sensitive Kafka producer properties such as username and password. This property accepts a [DynamicConfigProvider](../../operations/dynamic-config-provider.md) implementation. | no | none |
### Example
@@ -59,5 +60,6 @@
druid.emitter.kafka.segmentMetadata.topic=druid-segment-metadata
druid.emitter.kafka.producer.config={"max.block.ms":10000}
druid.emitter.kafka.extra.dimensions={"region":"us-east-1","environment":"preProd"}
+druid.emitter.kafka.producer.hiddenProperties={"config":{"sasl.jaas.config": "org.apache.kafka.common.security.plain.PlainLoginModule required username=\\"KV...NI\\" password=\\"gA3...n6a/\\";"}}
```
