public static List<ResumeVO2> toVOs(List<PositionSubscribeUser> positionSubscribeUsers) { List<ResumeVO2> vos = new ArrayList<ResumeVO2>(); if (positionSubscribeUsers == null) { return vos; } for (PositionSubscribeUser positionSubscribeUser : positionSubscribeUsers) { vos.add(ResumeVO2.toVO(positionSubscribeUser)); } return vos; }