@java.lang.Override
  public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(name_)) {
      com.google.protobuf.GeneratedMessageV3.writeString(output, 1, name_);
    }
    if (((bitField0_ & 0x00000001) != 0)) {
      output.writeMessage(2, getCreateTime());
    }
    if (((bitField0_ & 0x00000002) != 0)) {
      output.writeMessage(3, getUpdateTime());
    }
    com.google.protobuf.GeneratedMessageV3.serializeStringMapTo(
        output, internalGetLabels(), LabelsDefaultEntryHolder.defaultEntry, 4);
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(activeInput_)) {
      com.google.protobuf.GeneratedMessageV3.writeString(output, 6, activeInput_);
    }
    if (((bitField0_ & 0x00000004) != 0)) {
      output.writeMessage(9, getOutput());
    }
    for (int i = 0; i < elementaryStreams_.size(); i++) {
      output.writeMessage(10, elementaryStreams_.get(i));
    }
    for (int i = 0; i < muxStreams_.size(); i++) {
      output.writeMessage(11, muxStreams_.get(i));
    }
    for (int i = 0; i < manifests_.size(); i++) {
      output.writeMessage(12, manifests_.get(i));
    }
    for (int i = 0; i < spriteSheets_.size(); i++) {
      output.writeMessage(13, spriteSheets_.get(i));
    }
    if (streamingState_
        != com.google.cloud.video.livestream.v1.Channel.StreamingState.STREAMING_STATE_UNSPECIFIED
            .getNumber()) {
      output.writeEnum(14, streamingState_);
    }
    for (int i = 0; i < inputAttachments_.size(); i++) {
      output.writeMessage(16, inputAttachments_.get(i));
    }
    if (((bitField0_ & 0x00000008) != 0)) {
      output.writeMessage(18, getStreamingError());
    }
    if (((bitField0_ & 0x00000010) != 0)) {
      output.writeMessage(19, getLogConfig());
    }
    if (((bitField0_ & 0x00000020) != 0)) {
      output.writeMessage(21, getTimecodeConfig());
    }
    for (int i = 0; i < encryptions_.size(); i++) {
      output.writeMessage(24, encryptions_.get(i));
    }
    if (((bitField0_ & 0x00000040) != 0)) {
      output.writeMessage(25, getInputConfig());
    }
    if (((bitField0_ & 0x00000080) != 0)) {
      output.writeMessage(26, getRetentionConfig());
    }
    for (int i = 0; i < staticOverlays_.size(); i++) {
      output.writeMessage(27, staticOverlays_.get(i));
    }
    getUnknownFields().writeTo(output);
  }
<pre>
Optional. List of static overlay images. Those images display over the
output content for the whole duration of the live stream.
</pre>

<code>
repeated .google.cloud.video.livestream.v1.StaticOverlay static_overlays = 27 [(.google.api.field_behavior) = OPTIONAL];
</code>
java-video-live-stream/proto-google-cloud-live-stream-v1/src/main/java/com/google/cloud/video/livestream/v1/Channel.java