public void RegisterApp(IApplicationProvider app)
{
if (app == null)
{
throw new AppServiceException("Given app cannot be null.");
}
if (_appInstances.ContainsKey(app.GetInfo().ID))
{
app.Dispose();
throw new AppServiceException("Another instance of this app is already registered.");
}
app.Init(_api.OpenAPI, new AppDataService(app.GetInfo().ID));
_appInstances.Add(app.GetInfo().ID, app);
}