public com.google.protobuf.Value.Builder putMediaBuilderIfAbsent(java.lang.String key) {
      java.util.Map<java.lang.String, com.google.protobuf.ValueOrBuilder> builderMap =
          internalGetMutableMedia().ensureBuilderMap();
      com.google.protobuf.ValueOrBuilder entry = builderMap.get(key);
      if (entry == null) {
        entry = com.google.protobuf.Value.newBuilder();
        builderMap.put(key, entry);
      }
      if (entry instanceof com.google.protobuf.Value) {
        entry = ((com.google.protobuf.Value) entry).toBuilder();
        builderMap.put(key, entry);
      }
      return (com.google.protobuf.Value.Builder) entry;
    }
<pre>
Optional. The metadata of the chosen media file for the ad.
</pre>

<code>
map&lt;string, .google.protobuf.Value&gt; media = 5 [(.google.api.field_behavior) = OPTIONAL];
</code>
java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/AdStitchDetail.java