22/07/23: I published the source code here and refactored it so it is maintainable.
18/07/23: I was notified of Sparx redesigning their website. Due to this change, the extension will not be compatible with the new website and therefore become unusable in the near future. It is for this reason that I will release the source code and add as much documentation as possible, so that others can modify the code and hopefully continue the legacy!