private com.google.protobuf.RepeatedFieldBuilder<
          org.bwapi.proxy.messages.GameMessages.UnitId, org.bwapi.proxy.messages.GameMessages.UnitId.Builder, org.bwapi.proxy.messages.GameMessages.UnitIdOrBuilder> 
          getShownUnitsFieldBuilder() {
        if (shownUnitsBuilder_ == null) {
          shownUnitsBuilder_ = new com.google.protobuf.RepeatedFieldBuilder<
              org.bwapi.proxy.messages.GameMessages.UnitId, org.bwapi.proxy.messages.GameMessages.UnitId.Builder, org.bwapi.proxy.messages.GameMessages.UnitIdOrBuilder>(
                  shownUnits_,
                  ((bitField0_ & 0x00000800) == 0x00000800),
                  getParentForChildren(),
                  isClean());
          shownUnits_ = null;
        }
        return shownUnitsBuilder_;
      }