{"ast_node_type":"other","tokens":[{"end":51,"kind":"keyword","start":0,"text":"LangItem::Unsize"}]}
        LangItem::Unsize => WellKnownTrait::Unsize,
        LangItem::Unpin => WellKnownTrait::Unpin,
        LangItem::Tuple => WellKnownTrait::Tuple,