code: static synchronized void clearTLDOverrides() {
          inUse = false;
          countryCodeTLDsPlus = MemoryReductionUtil.EMPTY_STRING_ARRAY;
          countryCodeTLDsMinus = MemoryReductionUtil.EMPTY_STRING_ARRAY;
          genericTLDsPlus = MemoryReductionUtil.EMPTY_STRING_ARRAY;
          genericTLDsMinus = MemoryReductionUtil.EMPTY_STRING_ARRAY;
      }
docs: For use by unit test code only