public Builder addLoadedUnits(
          org.bwapi.proxy.messages.GameMessages.UnitId.Builder builderForValue) {
        if (loadedUnitsBuilder_ == null) {
          ensureLoadedUnitsIsMutable();
          loadedUnits_.add(builderForValue.build());
          onChanged();
        } else {
          loadedUnitsBuilder_.addMessage(builderForValue.build());
        }
        return this;
      }