question: private String zGetStandardTextFieldDateString ( LocalDate date ) { if ( settings == null ) { return "" ; } String standardDateString = "" ; if ( date == null ) { return standardDateString ; } if ( date . getEra ( ) == IsoEra . CE ) { standardDateString = date . format ( settings . getFormatForDatesCommonEra ( ) ) ; } else { standardDateString = date . format ( settings . getFormatForDatesBeforeCommonEra ( ) ) ; } return standardDateString ; }
target:  zGetStandardTextFieldDateString, This returns a string for the supplied date (or null), in the standard format which could be used for displaying that date in the text field.