session,
                    repositorySystem,
                    repositories,
                    null,
                    ProtoLookup.builder()
                            .addMapping(RequestCacheFactory.class, new DefaultRequestCacheFactory())
                            .build(),
                    null);
        }

        @Override
        protected Session newSession(

            searchEngineClient.admin().cluster().prepareHealth(toIndex).setWaitForYellowStatus().execute(ActionListener.wrap(response -> {
                searchEngineClient.addMapping(docIndex, "doc", toIndex);
                if (searchEngineClient.copyDocIndex(fromIndex, toIndex, replaceAliases) && replaceAliases
                        && !searchEngineClient.updateAlias(toIndex)) {

                    if (!exists) {
                        createIndex(configIndex, indexName);
                        createAlias(configIndex, indexName);
                    }
                }

                addMapping(configIndex, configType, indexName);
            } else {
                logger.warn("Invalid index config name: configName={}", configName);
            }
        });
    }

    /**