What is the default `upload-chunk-size`?

[deemp]

I found only the number 32MB (I assume the value is given in bytes) in the dist/restore/index.js after a build.

function getUploadOptions(copy) {
    const result = {
        uploadConcurrency: 4,
        uploadChunkSize: 32 * 1024 * 1024
    };
    if (copy) {
        if (typeof copy.uploadConcurrency === 'number') {
            result.uploadConcurrency = copy.uploadConcurrency;
        }
        if (typeof copy.uploadChunkSize === 'number') {
            result.uploadChunkSize = copy.uploadChunkSize;
        }
    }
    core.debug(`Upload concurrency: ${result.uploadConcurrency}`);
    core.debug(`Upload chunk size: ${result.uploadChunkSize}`);
    return result;
}

Is this number the default upload chunk size?