FolderMock mod3 = new FolderMock("mod3");
mod1.addMember(mod3);
mod3.addMember(new FileMock("c.py")); //not visited because mod3 has no __init__.
project.addMember(mod1);
visitor.memo = new HashMap<String, Object>();
visitor.visitAddedResource(initFromMod1, null, null);
//See comments above for visited.