setMappings example

$option = $this->get('models')->getReference(Option::class, $ruleData['optionId']);
                $rule->setMapping($mapping);
                $rule->setOption($option);
                $mapping->getRules()->add($rule);
                $options[] = $option;
            }
            $mapping->setImage($image);
            $this->get('models')->persist($mapping);
            $this->createImagesForOptions($options, $imageData, $image);
            $mappingModels[] = $mapping;
        }
        $image->setMappings($mappingModels);
        $this->get('models')->persist($image);
        $this->get('models')->flush();

        $result = $this->getRepository()->getArticleImageQuery($imageId)->getArrayResult();

        $this->View()->assign(['success' => true, 'data' => $result]);
    }

    /** * Event listener function of the product backend module. Fired when the user * edit or create an product variant and clicks the save button which displayed on bottom of the product * variant detail window. */