question: public static int update ( long id , V v ) { String passwd = ( String ) v . value ( "password" ) ; if ( ! X . isEmpty ( passwd ) ) { passwd = encrypt ( passwd ) ; v . set ( "password" , passwd , true ) ; } else { v . remove ( "password" ) ; } return Helper . update ( id , v . set ( "updated" , System . currentTimeMillis ( ) ) , User . class ) ; }
target:  update the user by the values, <br> if the values contains "password" field, it will auto encrypt the password field.