public Builder clearClientSecret() {
        bitField0_ = (bitField0_ & ~0x00000020);
        clientSecret_ = null;
        if (clientSecretBuilder_ != null) {
          clientSecretBuilder_.dispose();
          clientSecretBuilder_ = null;
        }
        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