code: public void setTimes(UnsignedInteger64 atime, UnsignedInteger64 mtime) {
  		this.atime = atime;
  		this.mtime = mtime;
  
  		// Set the flag
  		if (atime != null) {
  			flags |= SSH_FILEXFER_ATTR_ACCESSTIME;
  		} else {
  			flags ^= SSH_FILEXFER_ATTR_ACCESSTIME;
  		}
  	}
docs: Set the last access and last modified times. These times are represented
  by integers containing the number of seconds from Jan 1, 1970 UTC. NOTE:
  You should divide any value returned from Java's
  System.currentTimeMillis() method by 1000 to set the correct times as
  this returns the time in milliseconds from Jan 1, 1970 UTC.
  
  @param atime
  @param mtime