case classClosed(pnes: Seq[PNE]) extends PossibleNextElements with Product with Serializable
Indicates one of the possibilities must be found.
Simplest case for this is a run of optional elements followed
by a required element in a sequence. Can also occur if all
branches of a choice are Closed. Then the resulting choice
possibilities are also Closed.
Indicates one of the possibilities must be found. Simplest case for this is a run of optional elements followed by a required element in a sequence. Can also occur if all branches of a choice are Closed. Then the resulting choice possibilities are also Closed.