{"ast_node_type":"other","tokens":[{"end":86,"kind":"keyword","start":0,"text":"if"}]}
        if self.check_keyword(exp!(Raw)) && self.look_ahead(1, Token::is_mutability) {
    fn parse_borrow_modifiers(&mut self) -> (ast::BorrowKind, ast::Mutability) {
            // `raw [ const | mut ]`.