fact: Definition size_of_reachable_from_item {it} (p : reachable_from_item G ch valid it) : nat := @size_of_reachable_from_item' (@size_of_reachable_from_productions) it p.
imports: Fiat.Parsers.ContextFreeGrammar.Core Fiat.Parsers.Reachable.OnlyLast.Reachable Fiat.Parsers.BaseTypes