public java.lang.String getAdTagUri() {
      java.lang.Object ref = adTagUri_;
      if (!(ref instanceof java.lang.String)) {
        com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
        java.lang.String s = bs.toStringUtf8();
        adTagUri_ = s;
        return s;
      } else {
        return (java.lang.String) ref;
      }
    }
<pre>
Required. The default ad tag associated with this VOD config.
</pre>

<code>string ad_tag_uri = 3 [(.google.api.field_behavior) = REQUIRED];</code>

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