@Override
  public Http2NetworkClient getNetworkClient() throws IOException {
    return new Http2NetworkClient(http2ClientMetrics, http2ClientConfig, sslFactory, eventLoopGroup);
  }
Construct and return a new {@link Http2NetworkClient}
@return return a new {@link Http2NetworkClient}
ambry-network/src/main/java/com/github/ambry/network/http2/Http2NetworkClientFactory.java