{"ast_node_type":"other","tokens":[{"end":68,"kind":"keyword","start":0,"text":"rustc_hir::GenericBound::Use(_,"}]}
                rustc_hir::GenericBound::Use(_, span) => Some(span),
            |bound| match *bound {
                hir::GenericBound::Trait(_) | hir::GenericBound::Outlives(_) => None,