{"ast_node_type":"other","tokens":[{"end":117,"kind":"keyword","start":0,"text":"//"}]}
                    // - self.tcx.parent(self.tcx.parent(expr_ctor_def_id)) ::: DefId(0:26 ~ source_file[b442]::Blah)
                    // - self.tcx.parent(expr_ctor_def_id) :::                  DefId(0:28 ~ source_file[b442]::Blah::Variant)