transform(key: any): any {
    const splitedKeyArray = key.split('.');
    let nextArrayKey = null;
    let dataObject = this.i18nService.data;
    let arrayKeyAfterNext;

    for (let i = 0; i < splitedKeyArray.length; i++) {
      nextArrayKey = splitedKeyArray[i];

      if (dataObject == null) {
        return key;
      } else {

        if (dataObject instanceof Array) {
          if (i === splitedKeyArray.length) {
            dataObject = dataObject.find((eachObject) => eachObject[nextArrayKey] != null);
          } else {
            arrayKeyAfterNext = splitedKeyArray[i + 1];
            dataObject = dataObject.find((eachObject) => eachObject[nextArrayKey] == arrayKeyAfterNext)[nextArrayKey];
          }

        } else if (dataObject instanceof String || typeof(dataObject) == 'string') {
          break;
        } else {
          dataObject = dataObject[nextArrayKey];
        }
      }
    }
    return dataObject == null ? key : dataObject;
  }