CastClient Events | 
The CastClient type exposes the following members.
| Name | Description | |
|---|---|---|
| IssueUpdated | 
            This is fired whenever the outstanding issue/error message changes.
            |issueMessage| is empty if there is no issue.
              | |
| SinksUpdated | 
            This is fired whenever the list of available sinks changes. A sink is a
            device or a software surface that you can cast to.
              |