momo-jun commented on code in PR #16816:
URL: https://github.com/apache/pulsar/pull/16816#discussion_r931713881
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site2/docs/functions-develop-api.md:
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@@ -102,6 +102,13 @@ public class ExclamationFunction implements
Function<String, String> {
For more details, see [code
example](https://github.com/apache/pulsar/blob/master/pulsar-functions/java-examples/src/main/java/org/apache/pulsar/functions/api/examples/ExclamationFunction.java).
+:::note
+
+The return type of the `Function` can be wrapped in a Pulsar `Record` generic
which gives more control on the output message (topic, schema, properties, ...)
+You can use the `Context::newOutputRecordBuilder` method to build this
`Record` output.
Review Comment:
Yes, if you have a specific use case to write a function for because the
current tutorial page is use-case-based.
Or you can create a new topic under the "Develop" section to introduce the
new method/context.
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