code: public static VersionInfo getCLDRVersion() {
          // fetching this data should be idempotent.
          if(gCLDRVersion == null) {
              // from ZoneMeta.java
              UResourceBundle supplementalDataBundle = UResourceBundle.getBundleInstance(ICUData.ICU_BASE_NAME, "supplementalData", ICUResourceBundle.ICU_DATA_CLASS_LOADER);
              UResourceBundle cldrVersionBundle = supplementalDataBundle.get("cldrVersion");
              gCLDRVersion = VersionInfo.getInstance(cldrVersionBundle.getString());
          }
          return gCLDRVersion;
      }
docs: Returns the current CLDR version