custom css classes using less

[rscastro]

This is most likely a noobie question, but how would I go about creating custom classes using the LESS structure you created? The auto generated custom.bootstrap.less file seems to be creating these classes from somewhere. And even if I add my own custom classes to the custom.import.bootstrap.less file, it's not generating/populating in the custom.bootstrap.less file.

I could probably easily do the same thing by just adding my custom classes to my personal, style.css file, but I would think using the LESS structure has a way to do it as well. I thought there might be individual .js files for the creation of the classes, such as '.navbar-default', but I can't seem to find anything in any of the directories of my app