public Builder addStartLocations(
          org.bwapi.proxy.messages.BasicTypes.TilePosition.Builder builderForValue) {
        if (startLocationsBuilder_ == null) {
          ensureStartLocationsIsMutable();
          startLocations_.add(builderForValue.build());
          onChanged();
        } else {
          startLocationsBuilder_.addMessage(builderForValue.build());
        }
        return this;
      }