protected function configureSegments()
 {
     $segment = new Segment();
     $segment->setType(Segment::TYPE_METRIC);
     $segment->setSegment('interactions');
     $segment->setName('General_NbInteractions');
     $segment->setAcceptedValues('Any positive integer');
     $segment->setSuggestedValuesCallback(function ($idSite, $maxValuesToReturn) {
         $positions = range(1, 50);
         return array_slice($positions, 0, $maxValuesToReturn);
     });
     $this->addSegment($segment);
 }