#vulnerable code 
                                @Override
    public LookbackQuery withGranularity(Granularity granularity) {
        return withDataSource(new QueryDataSource(getInnerQuery().withGranularity(granularity)));
    } 
                            #location 3 
                            #vulnerability type NULL_DEREFERENCE
#fixed code
                                @Override
    public LookbackQuery withGranularity(Granularity granularity) {
        return withDataSource(new QueryDataSource(getInnerQueryUnchecked().withGranularity(granularity)));
    }