static boolean isToCollectionSet(PsiMethodCallExpression call) {
    if (!COLLECTOR_TO_COLLECTION.test(call)) return false;
    PsiClass aClass = FunctionalExpressionUtils.getClassOfDefaultConstructorFunction(call.getArgumentList().getExpressions()[0]);
    return InheritanceUtil.isInheritor(aClass, CommonClassNames.JAVA_UTIL_SET);
  }
static boolean isToCollectionSet(PsiMethodCallExpression call)