<@U0HUJ25V1> The bundle activator is instantiated ...
# tornadofx
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@thomasnield The bundle activator is instantiated by the OSGi framework. The reason it is able to do so is that the activator class is set in the manifest. This is done in the pom.xml that comes with the OSGi sample appl. You don't need to call anything to get the tab embedded, as Ron pointed out, using the addViewsWhen - since it works on TabPanes as well.