For AI agents: a documentation index is available at the root level at /llms.txt and /llms-full.txt. Append /llms.txt to any URL for a page-level index, or .md for the markdown version of any page.

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get selfId$(): Observable<string | null>

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get selfId(): string | null

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call.selfId$.subscribe((selfId) => {
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  console.log('selfId:', selfId);
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});