/**
  * 删除所选联系人
  *
  * @param contact 所选联系人
  */
 private void removeSelectContact(PersonalContact contact) {
   Iterator<ConferenceMemberEntity> iterator;
   if (isFirstVisible) {
     iterator = newMembers.iterator();
   } else {
     iterator = selectMembers.iterator();
   }
   if (!StringUtil.isStringEmpty(contact.getEspaceNumber())) {
     addMemberLogic.removeSelectConfMember(contact.getEspaceNumber(), iterator, false);
   } else {
     addMemberLogic.removeSelectConfMember(contact.getContactId(), iterator, false);
   }
 }