docs: public void setSubnetwork(int nodeId, int subnetwork) {
          if (subnetwork > 127)
              throw new IllegalArgumentException("Number of subnetworks is currently limited to 127 but requested " + subnetwork);
  
          byte[] bytes = new byte[1];
          bytes[0] = (byte) subnetwork;
          da.setBytes(nodeId, bytes, bytes.length);
      }