{"ast_node_type":"other","tokens":[{"end":59,"kind":"keyword","start":0,"text":"self.err_dotdotdot_syntax(self.token.span);"}]}
                self.err_dotdotdot_syntax(self.token.span);
            if self.token == token::DotDotDot && op.node == AssocOp::Range(RangeLimits::Closed) {
            }