code: public JBBPDslBuilder ByteOrder(final JBBPByteOrder order) {
      this.byteOrder = order == null ? JBBPByteOrder.BIG_ENDIAN : order;
      return this;
    }
docs: Set byte order for next fields
  
  @param order order, if null then BIG_ENDIAN
  @return the builder instance, must not be null