converts a string in the format of the defined dateutil #date_pattern to a localdate object.returns null if the string could not be converted . concode_field_sep String DATE_PATTERN concode_elem_sep DateTimeFormatter DATE_FORMATTER concode_field_sep boolean validDate concode_elem_sep String format
LocalDate function ( String arg0 ) { try { return DATE_FORMATTER . parse ( arg0 , LocalDate :: from ) ; } catch ( DateTimeParseException loc0 ) { return null ; } }