code: function(sStyle, iWeekNumber) {
  			assert(sStyle == "wide" || sStyle == "narrow" , "sStyle must be wide or narrow");
  
  			var oMessageBundle = sap.ui.getCore().getLibraryResourceBundle("sap.ui.core", this.oLocale.toString()),
  				sKey = "date.week.calendarweek." + sStyle;
  
  			return oMessageBundle.getText(sKey, iWeekNumber);
  		}
docs: Returns the defined pattern for representing the calendar week number.
  
  @param {string} sStyle the style of the pattern. It can only be either "wide" or "narrow".
  @param {int} iWeekNumber the week number
  @return {string} the week number string
  
  @public
  @since 1.32.0