private void ensureMuxStreamsIsMutable() {
      if (!muxStreams_.isModifiable()) {
        muxStreams_ = new com.google.protobuf.LazyStringArrayList(muxStreams_);
      }
      bitField0_ |= 0x00000004;
    }
<pre>
Required. Type of the manifest.
</pre>

<code>
.google.cloud.video.transcoder.v1.Manifest.ManifestType type = 2 [(.google.api.field_behavior) = REQUIRED];
</code>

@return This builder for chaining.
java-video-transcoder/proto-google-cloud-video-transcoder-v1/src/main/java/com/google/cloud/video/transcoder/v1/Manifest.java