syntax_data: {"ast_node_type":"other","tokens":[{"end":96,"kind":"keyword","start":0,"text":"self.tcx.normalize_erasing_late_bound_regions(self.typing_env,"}]}
source_snippet:             self.tcx.normalize_erasing_late_bound_regions(self.typing_env, ty.fn_sig(self.tcx));
context_before:         let callee_sig =