public Builder setClientSecret(
          com.google.cloud.vertexai.api.ApiAuth.ApiKeyConfig.Builder builderForValue) {
        if (clientSecretBuilder_ == null) {
          clientSecret_ = builderForValue.build();
        } else {
          clientSecretBuilder_.setMessage(builderForValue.build());
        }
        bitField0_ |= 0x00000020;
        onChanged();
        return this;
      }
<pre>
The application secret for the app registered in Azure.
</pre>

<code>.google.cloud.vertexai.v1.ApiAuth.ApiKeyConfig client_secret = 2;</code>
java-vertexai/proto-google-cloud-vertexai-v1/src/main/java/com/google/cloud/vertexai/api/SharePointSources.java