private com.google.protobuf.MapField<java.lang.String, java.lang.String>
      internalGetAdTagMacroMap() {
    if (adTagMacroMap_ == null) {
      return com.google.protobuf.MapField.emptyMapField(
          AdTagMacroMapDefaultEntryHolder.defaultEntry);
    }
    return adTagMacroMap_;
  }
<pre>
Ad tag URI. For most use cases, you should create a
[VodConfig][google.cloud.video.stitcher.v1.VodConfig] with this information
rather than setting this field directly.
</pre>

<code>string ad_tag_uri = 6;</code>

@return The bytes for adTagUri.
java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/VodSession.java