void () { doTest(false, true, psiMethod -> { final PsiParameter parameter = psiMethod.getParameterList().getParameters()[0]; final PsiClass collectionClass = myFixture.findClass(CommonClassNames.JAVA_UTIL_COLLECTION); final ParameterInfoImpl variableData = ParameterInfoImpl.create(0) .withName(parameter.getName()) .withType(JavaPsiFacade.getElementFactory(getProject()).createType(collectionClass)); return new ParameterInfoImpl[]{variableData}; }); }