@java.lang.Override
    public com.google.cloud.vertexai.api.ApiAuth.ApiKeyConfig getClientSecret() {
      return clientSecret_ == null
          ? com.google.cloud.vertexai.api.ApiAuth.ApiKeyConfig.getDefaultInstance()
          : clientSecret_;
    }
<pre>
The application secret for the app registered in Azure.
</pre>

<code>.google.cloud.vertexai.v1.ApiAuth.ApiKeyConfig client_secret = 2;</code>

@return The clientSecret.
java-vertexai/proto-google-cloud-vertexai-v1/src/main/java/com/google/cloud/vertexai/api/SharePointSources.java