@SequenceStyle(Type.GENERATED_FIXED_WITH_OPTIONAL_TAIL)
    public SequenceD1 getSequenceD1(SwiftTagListBlock parentSequence) {
        if (parentSequence != null && !parentSequence.isEmpty()) {
            final SwiftTagListBlock content = parentSequence.getSubBlockDelimitedWithOptionalTail(SequenceD1.START, SequenceD1.END, SequenceD1.TAIL);
            if (log.isLoggable(java.util.logging.Level.FINE)) {