/**
  * @param string $className
  * @param string $fieldName
  * @param string $fieldType
  */
 protected function changeFieldType($className, $fieldName, $fieldType)
 {
     if ($this->configManager->getConfigFieldModel($className, $fieldName)->getType() !== $fieldType) {
         $this->logger->notice(sprintf('Update a type of field "%s" to "%s". Entity: %s.', $fieldName, $fieldType, $className));
         $this->configManager->changeFieldType($className, $fieldName, $fieldType);
     }
 }
 /**
  * @param ConfigInterface $sourceEntityConfig The 'extend' config of the source entity
  * @param string          $targetEntityName
  * @param string          $relationName
  * @param string          $targetFieldName    A field name is used to show related entity
  * @param array           $options
  * @param string          $fieldType          The field type. By default the field type is manyToOne,
  *                                            but you can specify another type if it is based on manyToOne.
  *                                            In this case this type should be registered
  *                                            in entity_extend.yml under underlying_types section
  *
  * @return string The relation key
  */
 public function addManyToOneRelation(ConfigInterface $sourceEntityConfig, $targetEntityName, $relationName, $targetFieldName, $options = [], $fieldType = RelationType::MANY_TO_ONE)
 {
     $sourceEntityName = $sourceEntityConfig->getId()->getClassName();
     $relationKey = ExtendHelper::buildRelationKey($sourceEntityName, $relationName, RelationType::MANY_TO_ONE, $targetEntityName);
     // add a relation field config
     if (!$this->configManager->hasConfigFieldModel($sourceEntityName, $relationName)) {
         $this->configManager->createConfigFieldModel($sourceEntityName, $relationName, $fieldType);
         $options['extend']['state'] = ExtendScope::STATE_NEW;
     } else {
         $configFieldModel = $this->configManager->getConfigFieldModel($sourceEntityName, $relationName);
         if ($configFieldModel->getType() !== $fieldType) {
             $this->configManager->changeFieldType($sourceEntityName, $relationName, $fieldType);
         }
     }
     $options['extend']['is_extend'] = true;
     $options['extend']['relation_key'] = $relationKey;
     $options['extend']['target_entity'] = $targetEntityName;
     $options['extend']['target_field'] = $targetFieldName;
     $this->updateFieldConfigs($sourceEntityName, $relationName, $options);
     // add relation to config
     $relations = $sourceEntityConfig->get('relation', false, []);
     if (!isset($relations[$relationKey])) {
         $fieldId = new FieldConfigId('extend', $sourceEntityName, $relationName, RelationType::MANY_TO_ONE);
         $relations[$relationKey] = ['assign' => false, 'field_id' => $fieldId, 'owner' => true, 'target_entity' => $targetEntityName, 'target_field_id' => false];
         if (isset($options['extend']['cascade'])) {
             $relations[$relationKey]['cascade'] = $options['extend']['cascade'];
         }
         $sourceEntityConfig->set('relation', $relations);
         $extendConfigProvider = $this->configManager->getProvider('extend');
         $extendConfigProvider->persist($sourceEntityConfig);
     }
     return $relationKey;
 }