Supplier<MadTestingAction> (CodeInsightTestFixture fixture, String rootPath, FileFilter fileFilter, Function<? super PsiFile, ? extends Generator<? extends MadTestingAction>> actions) { return performOnFileContents(fixture, rootPath, fileFilter, (env, vFile) -> env.executeCommands(Generator.from(data -> data.generate(actions.apply(fixture.getPsiManager().findFile(vFile)))))); }