/// <summary>
/// Returns the metadata associated with the specified stream, if the stream is persisted to a store.
/// </summary>
/// <typeparam name="T">The type of stream messages</typeparam>
/// <param name="source">The stream to retrieve metadata about</param>
/// <param name="metadata">Upon return, this parameter contains the metadata associated with the stream, or null if the stream is not persisted</param>
/// <returns>True if the stream is persisted to a store, false otherwise</returns>
public static bool TryGetMetadata <T>(IProducer <T> source, out PsiStreamMetadata metadata)
{
return(Store.TryGetMetadata(source.Out.Pipeline, source.Out.Name, out metadata));
}