_addArticle(collection) {
    if (collection.length > this._index) {
      let article = collection[this._index];

      article = this._sdkParseAndAddProperties(article);

      this._articles.push(article);
      this._isMore = true;
    }
  }
/**
   * Adds an article from the collection to the main articles array
   *
   * @param {Array} collection  - Collection to extract the indexed {Article} from
   * @returns {void}
   * @private
   */
Adds an article from the collection to the main articles array
@param {Array} collection  - Collection to extract the indexed {Article} from
@returns {void}
@private
Adds an article from the collection to the main articles array @param { Array } collection - Collection to extract the indexed { Article } from @returns { void } @private
_addArticle(collection) {
    if (collection.length > this._index) {
      let article = collection[this._index];
      article = this._sdkParseAndAddProperties(article);
      this._articles.push(article);
      this._isMore = true;
    }
  }
_addArticle ( collection ) { if ( collection . length > this . _index ) { let article = collection [ this . _index ] ; article = this . _sdkParseAndAddProperties ( article ) ; this . _articles . push ( article ) ; this . _isMore = true ; } }
Adds an article from the collection to the main articles array
 @param {Array} collection  - Collection to extract the indexed {Article} from
 @returns {void}
 @private
Adds an article from the collection to the main articles array @param { Array } collection - Collection to extract the indexed { Article } from @returns { void } @private