{"ast_node_type":"other","tokens":[{"end":49,"kind":"keyword","start":0,"text":"WellKnownTrait::Unpin"}]}
        WellKnownTrait::Unpin => LangItem::Unpin,
        WellKnownTrait::Tuple => LangItem::Tuple,
        WellKnownTrait::Unsize => LangItem::Unsize,