code: public LocalDateTime getEndAsLocalDateTime() {
  
          PlainTimestamp tsp = this.getEndAsTimestamp();
          return ((tsp == null) ? null : tsp.toTemporalAccessor());
  
      }
docs: /*[deutsch]
  <p>Liefert den Endzeitpunkt. </p>
  
  @return  end time point or {@code null} if infinite
  @see     Boundary#isInfinite()
  @since   4.11