public Builder mergeSecretManagerKeySource(
        com.google.cloud.video.transcoder.v1.Encryption.SecretManagerSource value) {
      if (secretManagerKeySourceBuilder_ == null) {
        if (secretSourceCase_ == 7
            && secretSource_
                != com.google.cloud.video.transcoder.v1.Encryption.SecretManagerSource
                    .getDefaultInstance()) {
          secretSource_ =
              com.google.cloud.video.transcoder.v1.Encryption.SecretManagerSource.newBuilder(
                      (com.google.cloud.video.transcoder.v1.Encryption.SecretManagerSource)
                          secretSource_)
                  .mergeFrom(value)
                  .buildPartial();
        } else {
          secretSource_ = value;
        }
        onChanged();
      } else {
        if (secretSourceCase_ == 7) {
          secretManagerKeySourceBuilder_.mergeFrom(value);
        } 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