Force fileBasedIndex reindex/rebuild

Hi, is there any way to really force the reindex of some fileBasedIndex extension?

Currently I'm trying with:

FileBasedIndex.getInstance().requestRebuild(id);
FileBasedIndex.getInstance().scheduleRebuild(id, new Throwable());

But that doesn't work, I can see PhpStorm is doing some reindex but the breakpoints in debugger are never reached so I'm not sure what is doing exactly.

I have read this related post too: https://intellij-support.jetbrains.com/hc/en-us/community/posts/206109409-How-to-rebuild-index-on-demand-?input_string=Force%20fileBasedIndex%20reindex%2Frebuild

But that workaround does not work for me, it feels we are missing some info here, could please help us with some tip to force reindexing?

Thanks !!