code: function(sQueryOptionName) {
  			var sQueryOptionValue = null;
  
  			switch (sQueryOptionName) {
  			case "$select": {
  				var sSelectOption = "";
  				sSelectOption += (sSelectOption == "" ? "" : ",") + this._oParameter.getProperty().name;
  				if (this._oValueSetResult.text == true && this._oParameter.getTextProperty()) {
  					sSelectOption += (sSelectOption == "" ? "" : ",") + this._oParameter.getTextProperty().name;
  				}
  				sQueryOptionValue = (sSelectOption ? sSelectOption : null);
  				break;
  			}
  			case "$filter": {
  				var sFilterOption = null;
  				if (this._oFilterExpression) {
  					sFilterOption = this._oFilterExpression.getURIFilterOptionValue();
  				}
  				sQueryOptionValue = (sFilterOption ? sFilterOption : null);
  				break;
  			}
  			case "$orderby": {
  				var sSortOption = null;
  				if (this._oSortExpression) {
  					sSortOption = this._oSortExpression.getURIOrderByOptionValue();
  				}
  				sQueryOptionValue = (sSortOption ? sSortOption : null);
  				break;
  			}
  			default:
  				break;
  			}
  
  			return sQueryOptionValue;
  		}
docs: Get the value of a query option for the OData request URI corresponding
  to this request.
  
  @param {String}
  sQueryOptionName Identifies the query option: $select,
  $filter,... or any custom query option
  
  @returns {String} The value of the requested query option or null, if
  this option is not used for the OData request.
  @public
  @function
  @name sap.ui.model.analytics.odata4analytics.ParameterValueSetRequest#getURIQueryOptionValue