#vulnerable code 
                                public RuneList getDataRuneList(Region region) throws RiotApiException {

        return StaticDataMethod.getDataRuneList(region.getName(), getKey(), null, null, null);
    } 
                            #location 3 
                            #vulnerability type NULL_DEREFERENCE
#fixed code
                                public RuneList getDataRuneList(Region region) throws RiotApiException {

        return StaticDataMethod.getDataRuneList(region.getName(), getKey(), null, null, (RuneListData) null);
    }