code: public void setMode(long mode) throws IOException {
          setAttributes(
                  new NfsSetAttributes(Long.valueOf(mode), null, null, NfsTime.DO_NOT_CHANGE, NfsTime.DO_NOT_CHANGE));
      }
docs: /*
  (non-Javadoc)
  
  @see com.emc.ecs.nfsclient.util.NfsFile#changeMode(long)