public Builder setAes128(
        com.google.cloud.video.livestream.v1.Encryption.Aes128Encryption.Builder builderForValue) {
      if (aes128Builder_ == null) {
        encryptionMode_ = builderForValue.build();
        onChanged();
      } else {
        aes128Builder_.setMessage(builderForValue.build());
      }
      encryptionModeCase_ = 4;
      return this;
    }
<pre>
Configuration for HLS AES-128 encryption.
</pre>

<code>.google.cloud.video.livestream.v1.Encryption.Aes128Encryption aes128 = 4;</code>
java-video-live-stream/proto-google-cloud-live-stream-v1/src/main/java/com/google/cloud/video/livestream/v1/Encryption.java