private com.google.protobuf.SingleFieldBuilder<
          org.bwapi.proxy.messages.BasicTypes.Position, org.bwapi.proxy.messages.BasicTypes.Position.Builder, org.bwapi.proxy.messages.BasicTypes.PositionOrBuilder> 
          getSide2FieldBuilder() {
        if (side2Builder_ == null) {
          side2Builder_ = new com.google.protobuf.SingleFieldBuilder<
              org.bwapi.proxy.messages.BasicTypes.Position, org.bwapi.proxy.messages.BasicTypes.Position.Builder, org.bwapi.proxy.messages.BasicTypes.PositionOrBuilder>(
                  side2_,
                  getParentForChildren(),
                  isClean());
          side2_ = null;
        }
        return side2Builder_;
      }