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Method in
Signals to the line provider that lines with the provided line IDs may be presented shortly.
This method allows implementing classes a chance to prepare any neccessary resources needed to present these lines, like pre-loading voice-over audio. The default implementation does nothing.
Not every line may run; this method serves as a way to give the line provider advance notice that a line may run, not will run.
IEnumerable<string>
lineIDs
A collection of line IDs that the line provider should prepare for.
CancellationToken
cancellationToken
A cancellation token that indicates whether the operation should be cancelled.