How to access Google Cloud Natural Language API behind proxy C#

Question

I am trying to access Google Cloud Natural Language for text analytics. The code is working fine from open internet, but not working from my company network. I am new to this Google API. I have no idea of how to configure my company proxy in the code for calling API.

Below is the code I am using to call the API.

                    string jsonPath = "sentimentAnalysis.json";
                 
                    LanguageServiceClientBuilder builder = new LanguageServiceClientBuilder
                    {
                        CredentialsPath = jsonPath
                    };

                    LanguageServiceClient client = builder.Build();
                   
                    var response = client.AnalyzeSentiment(Document.FromPlainText("Hello World."));
                    var sentiment = response.DocumentSentiment;
                    var Sentences = response.Sentences;

I have gone through below links to set proxy, but not got required information.

Refer .net section

My issues is similar to this

The Json file contain Google Language API Configuration.

{
  "type": "",
  "project_id": "",
  "private_key_id": "",
  "private_key": "",
  "client_email": "",
  "client_id": "",
  "auth_uri": "",
  "token_uri": "",
  "auth_provider_x509_cert_url": "",
  "client_x509_cert_url": ""
}

Can any one please provide a way how to configure proxy in the above code.