code: private boolean isNoInheritanceMarker(int res) {
          int offset = RES_GET_OFFSET(res);
          if (offset == 0) {
              // empty string
          } else if (res == offset) {
              offset = getResourceByteOffset(offset);
              return getInt(offset) == 3 && bytes.getChar(offset + 4) == 0x2205 &&
                      bytes.getChar(offset + 6) == 0x2205 && bytes.getChar(offset + 8) == 0x2205;
          } else if (RES_GET_TYPE(res) == ICUResourceBundle.STRING_V2) {
              if (offset < poolStringIndexLimit) {
                  return poolBundleReader.isStringV2NoInheritanceMarker(offset);
              } else {
                  return isStringV2NoInheritanceMarker(offset - poolStringIndexLimit);
              }
          }
          return false;
      }
docs: CLDR string value "∅∅∅"=="\u2205\u2205\u2205" prevents fallback to the parent bundle.