borisyankov/DefinitelyTyped — pull request #3231 by dardino (2014-11-26 14:46:15+00:00)
Title: ThenByDescending(keySelector: T): OrderedEnumerable<T>;

replacing
ThenByDescending(keySelector: T): OrderedEnumerable;
with
ThenByDescending(keySelector: string): OrderedEnumerable;