{"ast_node_type":"other","tokens":[{"end":85,"kind":"keyword","start":0,"text":"if"}]}
            if self.may_recover() && self.look_ahead(1, |t| t.kind == token::Colon) {
        if self.check(exp!(PathSep)) {
                debug_assert!(!self.look_ahead(1, &looker), "Looker must not match on colon");