public Builder setSide1(
          org.bwapi.proxy.messages.BasicTypes.Position.Builder builderForValue) {
        if (side1Builder_ == null) {
          side1_ = builderForValue.build();
          onChanged();
        } else {
          side1Builder_.setMessage(builderForValue.build());
        }
        bitField0_ |= 0x00000008;
        return this;
      }