syntax_data: {"ast_node_type":"other","tokens":[{"end":87,"kind":"keyword","start":0,"text":"with_replaced_escaping_bound_vars(&infcx,"}]}
source_snippet:     with_replaced_escaping_bound_vars(&infcx, &mut vec![None], bound_tys, |bound_tys| {
context_before:     });
context_after:         let param_env = tcx.param_env(def_id);