{"ast_node_type":"variable","tokens":[{"end":73,"kind":"keyword","start":0,"text":"let"}]}
            let next = next_pos.unwrap_or_else(|| cmnt.pos + BytePos(1));
            let comment_line = self.sm.lookup_char_pos(cmnt.pos);
            if span.hi() < cmnt.pos && cmnt.pos < next && span_line.line == comment_line.line {