{"ast_node_type":"other","tokens":[{"end":96,"kind":"keyword","start":0,"text":"//"}]}
                    // FIXME(@dingxiangfei2009): it turns out that `self.body.source_scopes` are
                if self.drop_span.is_none() {
                    // still a bit wonky. There is a high chance that this span still points to a