public WebPushService(KillerContext context, IConfiguration configuration, WebPushClient webPushClient, ILogger <WebPushService> logger)
 {
     _context       = context;
     _configuration = configuration;
     _webPushClient = webPushClient;
     _logger        = logger;
 }
 public WebPushController(KillerContext context, IConfiguration configuration)
 {
     _context       = context;
     _configuration = configuration;
 }