private FetchProfilesResult fetchProfilesFromService(ParticipantId user,
List<String> addresses) {
OperationQueue opQueue = new OperationQueue();
FetchProfilesRequest request = new FetchProfilesRequest(addresses);
opQueue.fetchProfiles(request);
OperationContextImpl context =
new OperationContextImpl(waveletProvider,
converterManager.getEventDataConverter(ProtocolVersion.DEFAULT), conversationUtil);
OperationRequest operationRequest = opQueue.getPendingOperations().get(0);
String opId = operationRequest.getId();
OperationUtil.executeOperation(operationRequest, operationRegistry, context, user);
JsonRpcResponse jsonRpcResponse = context.getResponses().get(opId);
FetchProfilesResult profileResults =
(FetchProfilesResult) jsonRpcResponse.getData().get(ParamsProperty.FETCH_PROFILES_RESULT);
return profileResults;
}