public Builder addAllRaces(
          java.lang.Iterable<? extends org.bwapi.proxy.messages.GameMessages.RaceData> values) {
        if (racesBuilder_ == null) {
          ensureRacesIsMutable();
          super.addAll(values, races_);
          onChanged();
        } else {
          racesBuilder_.addAllMessages(values);
        }
        return this;
      }