OperationUtil.<String>getRequiredParameter(operation, ParamsProperty.WAVE_ID));
WaveletId waveletId = ApiIdSerializer.instance().deserialiseWaveletId(
OperationUtil.<String>getRequiredParameter(operation, ParamsProperty.WAVELET_ID));
return openConversation(waveId, waveletId, participant);
} catch (InvalidIdException e) {
throw new InvalidRequestException("Invalid id", operation, e);
}
}