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Update hubs-api-guide-server.md

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Rick Anderson 2018-10-29 15:06:26 -10:00 committed by GitHub
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@ -298,8 +298,10 @@ To call client methods from the server, use the `Clients` property in a method i
[!code-csharp[Main](hubs-api-guide-server/samples/sample23.cs?highlight=5)] [!code-csharp[Main](hubs-api-guide-server/samples/sample23.cs?highlight=5)]
> [!NOTE] Invoking a client method is an asynchronous operation and returns a `Task`. Use `await` :
> Invoking a client method is an asynchronous operation and returns a `Task`. Use `await` to ensure you wait for the message to be sent. If an error occurs while sending the message, `await` will also allow you to catch that exception using a try-catch block.
* To ensure the message is sent without error.
* To enable catching and handling errors.
**JavaScript client using generated proxy** **JavaScript client using generated proxy**