code: function() {
  			var sOptionString = this.renderUI5FilterArray(this._aConditionUI5Filter);
  			for (var i = -1, aUI5Filter; (aUI5Filter = this._aUI5FilterArray[++i]) !== undefined; ) {
  				sOptionString += (sOptionString == "" ? "" : " and ") + "(" + this.renderUI5FilterArray(aUI5Filter) + ")";
  			}
  			return sOptionString;
  		}
docs: Get the value for the OData system query option $filter corresponding to this expression.
  
  @returns {string} The $filter value for the filter expression
  @public
  @function
  @name sap.ui.model.analytics.odata4analytics.FilterExpression#getURIFilterOptionValue