protected function _mapType(\App_ListFilter_Interface $filter, \App_ListFilter $filterList)
 {
     if ($filter instanceof \App_ListFilter_BetweenFilter) {
         if ($filter->getFieldName() === StockFilterFields::ICC) {
             return Type::ICC_RANGE;
         }
         if ($filter->getFieldName() === StockFilterFields::IMSI) {
             return Type::IMSI_RANGE;
         }
         if ($filter->getFieldName() === StockFilterFields::MSISDN) {
             return Type::MSISDN_RANGE;
         }
     }
     return parent::_mapType($filter, $filterList);
 }
 protected function _mapType(\App_ListFilter_Interface $filter, \App_ListFilter $filterList)
 {
     if ($filter instanceof \App_ListFilter_BetweenFilter) {
         if ($filter->getFieldName() === SimFilterFields::STATIC_IP) {
             return Type::STATIC_IP_RANGE;
         }
         if ($filter->getFieldName() === SimFilterFields::CURRENT_IP) {
             return Type::CURRENT_IP_RANGE;
         }
     }
     return parent::_mapType($filter, $filterList);
 }