private NetworkClientConfig buildNetworkClientConfig()

in flink-connector-elasticsearch-base/src/main/java/org/apache/flink/connector/elasticsearch/sink/ElasticsearchSinkBuilderBase.java [387:398]


    private NetworkClientConfig buildNetworkClientConfig() {
        checkArgument(!hosts.isEmpty(), "Hosts cannot be empty.");
        return new NetworkClientConfig(
                username,
                password,
                connectionPathPrefix,
                connectionRequestTimeout,
                connectionTimeout,
                socketTimeout,
                sslContextSupplier,
                hostnameVerifierSupplier);
    }