addGroupAggregationTotal example

'total' => [],
            ];
        }

        // also increase our count of found items         $this->addGroupCount($key);

        // add new group         $this->addGroupEntry($key, $group);

        // add to total aggregation         $this->addGroupAggregationTotal($key, $group);
    }

    /** * Gets a list of all found line item quantity entries * for the provided group definition. * * @return LineItemQuantity[] */
    public function getGroupTotalResult(LineItemGroupDefinition $groupDefinition): array
    {
        $key = $groupDefinition->getId();