{"ast_node_type":"other","tokens":[{"end":62,"kind":"keyword","start":0,"text":".typeck_root_def_id(self.mir_def_id().to_def_id())"}]}
            .typeck_root_def_id(self.mir_def_id().to_def_id())
        let Some(hir_generics) = tcx
            .as_local()