The RevPrefixMap trait type subclasses PrefixMap and depends on its internals. PrefixMap wasn't designed for subclassing, and indeed changes in Traits 6.3 broke RevPrefixMap as a result. I'd recommend rewriting RevPrefixMap as a direct subclass of TraitType.
The
RevPrefixMaptrait type subclassesPrefixMapand depends on its internals.PrefixMapwasn't designed for subclassing, and indeed changes in Traits 6.3 brokeRevPrefixMapas a result. I'd recommend rewritingRevPrefixMapas a direct subclass ofTraitType.