void (@NotNull ClientState state, @NotNull DocumentReference docRef) { state.myMerger.flushCurrentCommand(); disposeCurrentMerger(state); Set<DocumentReference> set = Collections.singleton(docRef); state.myUndoStacksHolder.clearStacks(false, set); state.myRedoStacksHolder.clearStacks(false, set); mySharedUndoStacksHolder.trimStacks(set); mySharedRedoStacksHolder.trimStacks(set); }