docs: @Override
      protected int writeBytesWireFormat ( byte[] dst, int dstIndex ) {
          int start = dstIndex;
          SMBUtil.writeInt2(24, dst, dstIndex);
          SMBUtil.writeInt2(this.closeFlags, dst, dstIndex + 2);
          dstIndex += 4;
          dstIndex += 4; // Reserved
          System.arraycopy(this.fileId, 0, dst, dstIndex, 16);
          dstIndex += 16;
  
          if ( log.isDebugEnabled() ) {
              log.debug(String.format("Closing %s (%s)", Hexdump.toHexString(this.fileId), this.fileName));
          }
          return dstIndex - start;
      }