LGTM.
http://codereview.appspot.com/33061/diff/1/7 File java/gadgets/src/main/java/org/apache/shindig/gadgets/FetchResponseUtils.java (right): http://codereview.appspot.com/33061/diff/1/7#newcode72 Line 72: Collection<String> values = response.getHeaders(name); Looks like response.getHeaders is guaranteed immutable by the HttpResponse contract. Might be nice to add a comment to that effect. http://codereview.appspot.com/33061
