public async Task <Response <ExpressRouteConnection> > GetAsync(string resourceGroupName, string expressRouteGatewayName, string connectionName, CancellationToken cancellationToken = default) { if (resourceGroupName == null) { throw new ArgumentNullException(nameof(resourceGroupName)); } if (expressRouteGatewayName == null) { throw new ArgumentNullException(nameof(expressRouteGatewayName)); } if (connectionName == null) { throw new ArgumentNullException(nameof(connectionName)); } using var message = CreateGetRequest(resourceGroupName, expressRouteGatewayName, connectionName); await _pipeline.SendAsync(message, cancellationToken).ConfigureAwait(false); switch (message.Response.Status) { case 200: { ExpressRouteConnection value = default; using var document = await JsonDocument.ParseAsync(message.Response.ContentStream, default, cancellationToken).ConfigureAwait(false); value = ExpressRouteConnection.DeserializeExpressRouteConnection(document.RootElement); return(Response.FromValue(value, message.Response)); }