code: public void setUID(String uid) {
  		if (version > 3) {
  			flags |= SSH_FILEXFER_ATTR_OWNERGROUP;
  		} else
  			flags |= SSH_FILEXFER_ATTR_UIDGID;
  		this.uid = uid;
  	}
docs: Set the UID of the owner.
  
  @param uid