public Builder setStartLocation(
          org.bwapi.proxy.messages.BasicTypes.TilePosition.Builder builderForValue) {
        if (startLocationBuilder_ == null) {
          startLocation_ = builderForValue.build();
          onChanged();
        } else {
          startLocationBuilder_.setMessage(builderForValue.build());
        }
        bitField0_ |= 0x00000040;
        return this;
      }