将代理服务器与BigQueryClient C＃一起使用

Question

如何在BigQueryClient中使用代理服务器？

这是示例代码：-

var fs = new FileStream(_BQConn.JSONKeyFileName, FileMode.Open);
GoogleCredential googlecreds = GoogleCredential.FromStream(fs);
BigQueryClient client = BigQueryClient.Create(_BQConn.ProjectId, googlecreds);
Task<BigQueryResults> TaskData = client.ExecuteQueryAsync(Query,null,null , null);
BigQueryResults data = await TaskData;