{"ast_node_type":"other","tokens":[{"end":73,"kind":"keyword","start":0,"text":"//"}]}
                    // FIXME: ...which obviously won't have any generics.
                        tcx.hir_get_parent_item(tcx.local_def_id_to_hir_id(ty_param_def_id))
                    && let Some(generics) = tcx.hir_get_generics(item_def_id.def_id)