Mention existing usage
diff --git a/json-generation/README.md b/json-generation/README.md
index 92ebeb2..aecfab0 100644
--- a/json-generation/README.md
+++ b/json-generation/README.md
@@ -12,3 +12,7 @@
the only required dependency is our `org.apache.sling.commons.johnzon` module,
which embeds those JSR-374 APIs as well as the [Apache Johnzon](https://johnzon.apache.org/)
core in a relatively small bundle (150kB as I write this).
+
+The `JsonGenerator` is used in several of our modules already, searching for `import javax.json.stream.JsonGenerator`
+in the Sling codebase reports 26 results as I write this. This minimal example can help decide if it will also work
+for your use case.
