getEmbedExternalView
abstract suspend fun getEmbedExternalView(params: GetEmbedExternalViewQueryParams): AtpResponse<GetEmbedExternalViewResponse>
Resolve one or more AT-URIs into the data needed to render an enhanced external embed. Returns associatedRefs (strongRefs to embed into a post's external.associatedRefs), the raw associatedRecords, and a hydrated view. The response is empty ({}) when no records were resolvable, or when validation determined the resolved records don't actually back the requested URL; clients should fall back to their own link-card rendering in that case and skip writing strongRefs to the post.