syntax_data: {"ast_node_type":"other","tokens":[{"end":71,"kind":"keyword","start":0,"text":"self.tcx.try_normalize_generic_arg_after_erasing_regions(input)"}]}
source_snippet:         self.tcx.try_normalize_generic_arg_after_erasing_regions(input)
context_before:         let input = self.typing_env.as_query_input(arg);
context_after:     }