syntax_data: {"ast_node_type":"other","tokens":[{"end":63,"kind":"keyword","start":0,"text":"fn_sig.output().skip_binder().visit_with(self);"}]}
source_snippet:                 fn_sig.output().skip_binder().visit_with(self);
context_before:                 let fn_sig = tcx.fn_sig(did).instantiate(tcx, args);