mozilla-services/android-sync — comment on commit 1b3da4230a839770cb3cb6e22b1d75a9c2c63de5
File: src/main/java/org/mozilla/gecko/sync/GlobalSession.java line 93
By ncalexan:

So that EnsureClusterURLStage can poke the callback about node reassignment. Better than having four pass through methods in GlobalSession?