public function expectAnswer(AbstractItem $question)
    {
        $expected = [];

        switch ($question->getSumMode()) {
            case GridQuestion::SUM_CELL:
                foreach ($question->getCells()->toArray() as $cell) {
                    if (0 < count($cell->getChoices())) {
                        $expected[] = $this->findCellExpectedAnswer($cell);
                    }
                }
                break;
            case GridQuestion::SUM_COLUMN:
                for ($i = 0; $i < $question->getColumns(); ++$i) {
                    // get cells where there is at least 1 expected answers for the current column (none possible)
                    foreach ($question->getCells() as $cell) {
                        // found a cell in this col with an expected answer
                        if ($cell->getCoordsX() === $i && 0 < count($cell->getChoices())) {
                            // all choices should have the same score
                            $scoreToApply = $cell->getChoices()[0]->getScore();
                            $expected[] = new GenericScore($scoreToApply);
                            break;
                        }
                    }
                }
                break;
            case GridQuestion::SUM_ROW:
                for ($i = 0; $i < $question->getRows(); ++$i) {
                    // get cells where there is at least 1 expected answers for the current row (none possible)
                    foreach ($question->getCells() as $cell) {
                        // found a cell in this row with an expected answer
                        if ($cell->getCoordsY() === $i && 0 < count($cell->getChoices())) {
                            // all choices should have the same score
                            $scoreToApply = $cell->getChoices()[0]->getScore();
                            $expected[] = new GenericScore($scoreToApply);
                            break;
                        }
                    }
                }
                break;
        }

        return $expected;
    }