private com.google.protobuf.SingleFieldBuilderV3<
            com.google.protobuf.Struct,
            com.google.protobuf.Struct.Builder,
            com.google.protobuf.StructOrBuilder>
        getHeadersFieldBuilder() {
      if (headersBuilder_ == null) {
        headersBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.protobuf.Struct,
                com.google.protobuf.Struct.Builder,
                com.google.protobuf.StructOrBuilder>(
                getHeaders(), getParentForChildren(), isClean());
        headers_ = null;
      }
      return headersBuilder_;
    }
<pre>
Headers from the response.
</pre>

<code>.google.protobuf.Struct headers = 2;</code>
java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/ResponseMetadata.java