code: public static OffsetDateTime from(TemporalAccessor temporal) {
          if (temporal instanceof OffsetDateTime) {
              return (OffsetDateTime) temporal;
          }
          try {
              ZoneOffset offset = ZoneOffset.from(temporal);
              LocalDate date = temporal.query(TemporalQueries.localDate());
              LocalTime time = temporal.query(TemporalQueries.localTime());
              if (date != null && time != null) {
                  return OffsetDateTime.of(date, time, offset);
              } else {
                  Instant instant = Instant.from(temporal);
                  return OffsetDateTime.ofInstant(instant, offset);
              }
          } catch (DateTimeException ex) {
              throw new DateTimeException("Unable to obtain OffsetDateTime from TemporalAccessor: " +
                      temporal + " of type " + temporal.getClass().getName(), ex);
          }
      }
docs: Obtains an instance of {@code OffsetDateTime} from a temporal object.
  <p>
  This obtains an offset date-time based on the specified temporal.
  A {@code TemporalAccessor} represents an arbitrary set of date and time information,
  which this factory converts to an instance of {@code OffsetDateTime}.
  <p>
  The conversion will first obtain a {@code ZoneOffset} from the temporal object.
  It will then try to obtain a {@code LocalDateTime}, falling back to an {@code Instant} if necessary.
  The result will be the combination of {@code ZoneOffset} with either
  with {@code LocalDateTime} or {@code Instant}.
  Implementations are permitted to perform optimizations such as accessing
  those fields that are equivalent to the relevant objects.
  <p>
  This method matches the signature of the functional interface {@link TemporalQuery}
  allowing it to be used as a query via method reference, {@code OffsetDateTime::from}.
  
  @param temporal  the temporal object to convert, not null
  @return the offset date-time, not null
  @throws DateTimeException if unable to convert to an {@code OffsetDateTime}