Locating the project classes are contained in

I am reading the soruce of a IntelliJ  class. I want to know what Project, not package, that class has been assigned to. I would like to find that project and open it as a project.  So with the  editor open and the Project tab ivew set to "Project" (and not "packages")   I am trying to answer the question- what (sub)-Project (.iml file) does this class belong to?

I have tried a variety of ways to answer this question; searching and CTRL-ENTERing with the project view open for instance, but the resut always takes me to the package the class is located in. If I have the Project view open, it switches automatically to the Packages view, then locates the class in the package strcuture.

Can I do this through the IDE or is there a master list of correspondences between IntelliJ classes and the Project they are contained in available to OpenAPI consumers somewhere?

Hope this makes sense.