public Builder setTransport(
          org.bwapi.proxy.messages.GameMessages.UnitId.Builder builderForValue) {
        if (transportBuilder_ == null) {
          transport_ = builderForValue.build();
          onChanged();
        } else {
          transportBuilder_.setMessage(builderForValue.build());
        }
        bitField1_ |= 0x00000400;
        return this;
      }