{"ast_node_type":"other","tokens":[{"end":80,"kind":"keyword","start":0,"text":"//"}]}
            // In that case we don't want to add another "where" (Fixes #120838)
            //      fn foo<X>(x: X) where { ... }
            let where_prefix = if generics.where_clause_span.is_empty() { " where" } else { "" };