WaveViewData waveData;
StringMap<DocOp> diffMap = CollectionUtils.createStringMap();
@Override protected DomRenderer createRenderer() {
final BlipQueueRenderer pager = getBlipQueue();
DocRefRenderer docRenderer = new DocRefRenderer() {
@Override
public UiBuilder render(
ConversationBlip blip, IdentityMap<ConversationThread, UiBuilder> replies) {
// Documents are rendered blank, and filled in later when
// they get paged in.