null,
new HashSet(0),
  public Assignment grant  	(PrivilegedSubject 	grantee,  	 TreeNode 					scope,     Function 					function,     boolean 						canGrant,     boolean 						grantOnly)  throws  	SignetAuthorityException,  	ObjectNotFoundException  {    return this.grant    	(grantee,    	 scope,    	 function,    	 null,    	 canGrant,    	 grantOnly);  }