def with_update(rel, headers)
rel_id = rel.find("//osm/relation").first["id"].to_i
put api_relation_path(:id => rel_id), :params => rel.to_s, :headers => headers
def with_update(rel, headers)
rel_id = rel.find("//osm/relation").first["id"].to_i
put api_relation_path(:id => rel_id), :params => rel.to_s, :headers => headers