emqx/changes/ce/feat-13548.en.md

Optionally calls the on_config_changed/2 callback function when the plugin configuration is updated via the REST API.

This callback function is assumed to be exported by the <PluginName>_app module. i.e: Plugin NameVsn: my_plugin-1.0.0 This callback function is assumed to be my_plugin_app:on_config_changed/2