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