question: JapaneseDate ( LocalDate isoDate ) { if ( isoDate . isBefore ( MEIJI_6_ISODATE ) ) { throw new DateTimeException ( "JapaneseDate before Meiji 6 is not supported" ) ; } LocalGregorianCalendar . Date jdate = toPrivateJapaneseDate ( isoDate ) ; this . era = JapaneseEra . toJapaneseEra ( jdate . getEra ( ) ) ; this . yearOfEra = jdate . getYear ( ) ; this . isoDate = isoDate ; }
target:  Creates an instance from an ISO date.