srcX, err := src.UnmarshalNew()
	if err != nil {
		return nil, err
	}

	// Merge the two typed protos
	merge.Merge(dstX, srcX)

	// Convert the merged proto back to dst
	retVal := protoconv.MessageToAny(dstX)

	return retVal, nil
}

// AppendLbEndpointMetadata adds metadata values to a lb endpoint using the passed in metadata as base.