addFieldIfNotNull(out, Rss.Medias.DURATION, mediaContent.getDuration());
addFieldIfNotNull(out, Rss.Medias.WIDTH, mediaContent.getWidth());
addFieldIfNotNull(out, Rss.Medias.HEIGHT, mediaContent.getHeight());
out.endObject();
}
out.endArray();
}
if (riverName != null) {
out.field("river", riverName);
}