#fixed code
                                @Override
    @JsonIgnore
    public Filter getFilter() {
        return getInnerQueryUnchecked().getFilter();
    }
#vulnerable code 
                                @Override
    @JsonIgnore
    public Filter getFilter() {
        return getInnerQuery().getFilter();
    } 
                            #location 4 
                            #vulnerability type NULL_DEREFERENCE