private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.video.livestream.v1.Encryption.MpegCommonEncryption,
            com.google.cloud.video.livestream.v1.Encryption.MpegCommonEncryption.Builder,
            com.google.cloud.video.livestream.v1.Encryption.MpegCommonEncryptionOrBuilder>
        getMpegCencFieldBuilder() {
      if (mpegCencBuilder_ == null) {
        if (!(encryptionModeCase_ == 6)) {
          encryptionMode_ =
              com.google.cloud.video.livestream.v1.Encryption.MpegCommonEncryption
                  .getDefaultInstance();
        }
        mpegCencBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.cloud.video.livestream.v1.Encryption.MpegCommonEncryption,
                com.google.cloud.video.livestream.v1.Encryption.MpegCommonEncryption.Builder,
                com.google.cloud.video.livestream.v1.Encryption.MpegCommonEncryptionOrBuilder>(
                (com.google.cloud.video.livestream.v1.Encryption.MpegCommonEncryption)
                    encryptionMode_,
                getParentForChildren(),
                isClean());
        encryptionMode_ = null;
      }
      encryptionModeCase_ = 6;
      onChanged();
      return mpegCencBuilder_;
    }
<pre>
Configuration for MPEG-Dash Common Encryption (MPEG-CENC).
</pre>

<code>.google.cloud.video.livestream.v1.Encryption.MpegCommonEncryption mpeg_cenc = 6;</code>
java-video-live-stream/proto-google-cloud-live-stream-v1/src/main/java/com/google/cloud/video/livestream/v1/Encryption.java