function categorize(fileOwners, fileMetadatas) {
    const result = new Map();
    [...fileOwners.keys()].forEach(platform => {
        result.set(platform, {
            name: platform,
            files: []
        });
    });

    Object.values(fileMetadatas).forEach(fileMetadata => {
        [...fileOwners.keys()].forEach(platform => {
            const files = fileOwners.get(platform);

    let totalAdditions = 0;
    let totalDeletions = 0
    let totalChangedFiles = 0;

    let summaries = [...groupedFiles.values()];
    Object.values(summaries).forEach(summary => {
        summary.additions = 0;
        summary.deletions = 0;

        summary.files.forEach(file => {
            let fileMetadata = metadataFor(fileMetadatas, file);
            summary.additions += fileMetadata.additions;

                <td>Deleted Lines</td>
                <td>% of Total Line Changes</td>
                <td>Files Changed</td>
                <td>% of Total Files Changed</td>
            </tr>`;

    preppedStatistics.forEach(summary => {
        result += `<tr>
            <td>${summary.name}</td>
            <td>${summary.additions}</td>
            <td>${summary.additionPercent}%</td>
            <td>${summary.deletions}</td>

 */
function byPlatform(files) {
    const result = new Map();
    files.forEach(file => {
        const platform = getPlatform(file);
        if (!result.has(platform)) {
            result.set(platform, []);
        }
        result.get(platform).push(file);
    });

    console.log("byPlatform: ");
    [...result.keys()].forEach(platform => {

                .map(u => u.replace(/^@gradle\//, ""))
                .forEach(owner => {
                    if (!result.has(owner)) {
                        result.set(owner, []);
                    }
                    result.get(owner).push(f);
                });
        });

        console.log("byCodeowner: ");
        [...result.keys()].forEach(owner => {

    add (pattern) {
        this._added = false

        makeArray(
            isString(pattern)
                ? splitPattern(pattern)
                : pattern
        ).forEach(this._addPattern, this)

        // Some rules have just added to the ignore,
        // making the behavior changed.
        if (this._added) {
            this._initCache()
        }

        return this