find(query, options) {
    options = options || {};

    let cursor = this._dbCollection.find(query, options);

    if (options.skip) cursor.skip(Number(options.skip));
    cursor.limit(options.limit ? Number(options.limit) : DEFAULT_PAGE_SIZE);

    return new MongotronCursor(cursor);
  }
@param {Object} [query] - mongo query
@param {Object} [options] - mongo query options