Create a new following maven project with the following dependencies. (Note that the tomcat dependency is just so that you’re able to run it in an embedded tomcat for development so not really needed)
This brings in the ui-modeler app as a WAR dependency of your project. You then need to add the following build configuration to the pom:
which essentially tells maven, which files/folders to overlay in the original WAR with your modifications.
Then copy this folder to the same location in your project.
That should allow you to modify the ui modeler to your needs.
(Note that I might be missing some configuration details but not sure at the moment as mine has a lof of other