#fixed code
                                <T> Future<JsonObject> searchAsync(final JsonObject params, final JqFlow workflow) {
        return this.search.searchAsync(params, workflow);
    }
#vulnerable code 
                                <T> T fetchOne(final JsonObject filters) {
        final Condition condition = JooqCond.transform(filters, Operator.AND, this.analyzer::column);
        final DSLContext context = JooqInfix.getDSL();
        return this.toResult(context.selectFrom(this.vertxDAO.getTable()).where(condition).fetchOne(this.vertxDAO.mapper()));
    } 
                            #location 4 
                            #vulnerability type NULL_DEREFERENCE