*/
  @CanIgnoreReturnValue
  public static long decode(String stringValue) {
    ParseRequest request = ParseRequest.fromString(stringValue);

    try {
      return parseUnsignedLong(request.rawValue, request.radix);
    } catch (NumberFormatException e) {
      NumberFormatException decodeException =
          new NumberFormatException("Error parsing value: " + stringValue);
      decodeException.initCause(e);

        assertNull(dataStoreParams.get("nonexistent"));
    }

    // Test getAsString with String value
    public void test_getAsStringWithStringValue() {
        dataStoreParams.put("stringKey", "stringValue");
        assertEquals("stringValue", dataStoreParams.getAsString("stringKey"));
    }

    // Test getAsString with non-String value
    public void test_getAsStringWithNonStringValue() {
        dataStoreParams.put("intKey", 123);