* @see com.google.code.stackexchange.client.StackOverflowApiClient#getRevisionForPost(long, java.lang.String)
*/
@Override
public Revision getRevisionForPost(long postId, String revisionGuid) {
ApiUrlBuilder builder = createStackOverflowApiUrlBuilder(StackExchangeApiMethods.GET_REVISIONS_FOR_POST);
String apiUrl = builder.withId(postId).withField("revisionguid", revisionGuid).buildUrl();
PagedList<Revision> list = unmarshallList(Revision.class, callApiMethod(apiUrl));
return (list.isEmpty())? null : list.get(0);
}