code: public void setGID(String gid) {
  
  		if (version > 3) {
  			flags |= SSH_FILEXFER_ATTR_OWNERGROUP;
  		} else
  			flags |= SSH_FILEXFER_ATTR_UIDGID;
  		this.gid = gid;
  	}
docs: Set the GID of this file.
  
  @param gid