code: function toGregorian(oJapanese) {
  		var iEraStartYear = UniversalDate.getEraStartDate(CalendarType.Japanese, oJapanese.era).year;
  		return {
  			year: iEraStartYear + oJapanese.year - 1,
  			month: oJapanese.month,
  			day: oJapanese.day
  		};
  	}
docs: Calculate gregorian year from japanes era and year
  
  @param {object} oJapanese
  @return {int}