public function IsValid($data = null, $entity = null)
 {
     $devices = array();
     foreach ($data['devices'] as $id => $device) {
         $newDevice = new Devices();
         $newDevice->id = $id;
         foreach ($device as $key => $value) {
             $newDevice->{$key} = $value;
         }
         $newDevice->validate();
         $devices[] = $newDevice;
     }
     return $devices;
 }