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package scalax.collection.generic.covartest
trait SequenceFactory[CC[A] <: Sequence[A]] extends IterableFactory[CC] {
/** This method is called in a pattern match { case Sequence(...) => }.
*
* @param x the selector value
* @return sequence wrapped in an option, if this is a Sequence, otherwise none
*/
def unapplySeq[A](x: CC[A]): Some[CC[A]] = Some(x)
}
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