public Builder setSecretManagerKeySource(
        com.google.cloud.video.transcoder.v1.Encryption.SecretManagerSource value) {
      if (secretManagerKeySourceBuilder_ == null) {
        if (value == null) {
          throw new NullPointerException();
        }
        secretSource_ = value;
        onChanged();
      } else {
        secretManagerKeySourceBuilder_.setMessage(value);
      }
      secretSourceCase_ = 7;
      return this;
    }
<pre>
Keys are stored in Google Secret Manager.
</pre>

<code>
.google.cloud.video.transcoder.v1.Encryption.SecretManagerSource secret_manager_key_source = 7;
</code>
java-video-transcoder/proto-google-cloud-video-transcoder-v1/src/main/java/com/google/cloud/video/transcoder/v1/Encryption.java