public async Task <List <User> > GetUsersInContacts() { if (_State == null) { return(null); } List <string> lNumbers = await _PhonebookService.GetPhoneNumbersAsync(); if (lNumbers == null || !lNumbers.Any()) { return(new List <User>()); } try { using ApiClient lClient = new ApiClient(_State); return(await lClient.NumberSearch(lNumbers)); } catch (Exception) { return(new List <User>()); } }