find(idOrPath) {
        if (typeof idOrPath === 'string') {
            if (this.chunks[idOrPath]) {
                return this.chunks[idOrPath];
            }

            return this.find((_, id) => id === idOrPath);
        }

        const item = Object.entries(this.chunks).find(([id, chunk]) =>
            idOrPath(chunk, id)
        );

        return item ? item[1] : null;
    }
@param {string|ChunkFindCallback} idOrPath
@returns {CacheGroup|null}