All classes that implement SolrFieldManagerInterface in Search API Solr 4.x
- class \Drupal\search_api_solr\SolrFieldManager implements SolrFieldManagerInterface uses \Drupal\search_api\LoggerTrait, UseCacheBackendTrait, StringTranslationTrait
- class \Drupal\search_api_solr\SolrMultisiteFieldManager