getCluster error in getIndexName

When site has also other search backend than Elasticsearch, adding or clearing elasticsearch index, will provide a fatal error
"Error: Call to undefined method Drupal\search_api_db\Plugin\search_api\backend\Database::getCluster() in Drupal\elasticsearch_connector\ElasticSearch\Parameters\Factory\IndexFactory::getIndexName() (line 236 of /docroot/modules/contrib/elasticsearch_connector/src/ElasticSearch/Parameters/Factory/IndexFactory.php)"

This is because getIndexName() on src/ElasticSearch/Parameters/Factory/IndexFactory doesn't check if the backend is SearchApiElasticsearchBackend.