void () { myFixture.configureByText("I.java", "interface I {" + " class Impl implements I {" + " }" + "};"); myFixture.testStructureView(component -> { component.setActionActive(InheritedMembersNodeProvider.ID, true); PlatformTestUtil.assertTreeEqual(component.getTree(), """ -I.java -I +Impl"""); }); }