code: @Override
      public CassandraDeepJobConfig<T> initialize() {
          super.initialize();
  
          Map<String, String> tmpMap = new HashMap<>();
  
          Field[] deepFields = AnnotationUtils.filterDeepFields(entityClass);
  
          for (Field f : deepFields) {
              String dbName = AnnotationUtils.deepFieldName(f);
              String beanFieldName = f.getName();
  
              tmpMap.put(dbName, beanFieldName);
          }
  
          mapDBNameToEntityName = Collections.unmodifiableMap(tmpMap);
  
          return this;
      }
docs: {@inheritDoc}