How to use the name-suggestion-index.brands.brands function in name-suggestion-index

export function validationOutdatedTags(context) {
    var type = 'outdated_tags';

    // initialize name-suggestion-index matcher
    var nsiMatcher = matcher();
    nsiMatcher.buildMatchIndex(brands.brands);
    var nsiKeys = ['amenity', 'shop', 'tourism', 'leisure', 'office'];

    var allWD = {};
    var allWP = {};
    Object.keys(brands.brands).forEach(function(kvnd) {
        var brand = brands.brands[kvnd];
        var wd = brand.tags['brand:wikidata'];
        var wp = brand.tags['brand:wikipedia'];
        if (wd) { allWD[wd] = kvnd; }
        if (wp) { allWP[wp] = kvnd; }
    });


    function oldTagIssues(entity, graph) {
        var oldTags = Object.assign({}, entity.tags);  // shallow copy
        var preset = context.presets().match(entity, graph);

// try key/value|name match against name-suggestion-index
        if (newTags.name) {
            for (var i = 0; i < nsiKeys.length; i++) {
                var k = nsiKeys[i];
                if (!newTags[k]) continue;

                var center = entity.extent(graph).center();
                var countryCode = countryCoder.iso1A2Code(center);
                var match = nsiMatcher.matchKVN(k, newTags[k], newTags.name, countryCode && countryCode.toLowerCase());
                if (!match) continue;

                // for now skip ambiguous matches (like Target~(USA) vs Target~(Australia))
                if (match.d) continue;

                var brand = brands.brands[match.kvnd];
                if (brand && brand.tags['brand:wikidata'] &&
                    brand.tags['brand:wikidata'] !== entity.tags['not:brand:wikidata']) {
                    subtype = 'noncanonical_brand';

                    var keepTags = ['takeaway'].reduce(function(acc, k) {
                        if (newTags[k]) {
                            acc[k] = newTags[k];
                        }
                        return acc;
                    }, {});

                    nsiKeys.forEach(function(k) { delete newTags[k]; });
                    Object.assign(newTags, brand.tags, keepTags);
                    break;
                }
            }